在 GraphQL API 响应报错:Expected a value of type \”URL\” but received: (empty string)

1、在 GraphQL API 响应报错:Expected a value of type \”URL\” but received: (empty string)。如图1

图1

{
  "errors": [
    {
      "debugMessage": "Expected a value of type \"URL\" but received: (empty string)",
      "message": "Internal server error",
      "extensions": {
        "category": "internal"
      },
      "locations": [
        {
          "line": 128,
          "column": 3
        }
      ],
      "path": [
        "onlineStore",
        "theme",
        "themeSettingsCategories",
        4,
        "settings",
        0,
        "imagePickerValue"
      ],
      "trace": [
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 786,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeLeafValue(GraphQLType: URL, (empty string))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 654,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValue(GraphQLType: URL, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(7), (empty string))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 557,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValueCatchingError(GraphQLType: URL, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(7), (empty string))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 1195,
          "call": "GraphQL\\Executor\\ReferenceExecutor::resolveField(GraphQLType: ThemeSettingImagePicker, array(7), instance of ArrayObject(1), array(7))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 1145,
          "call": "GraphQL\\Executor\\ReferenceExecutor::executeFields(GraphQLType: ThemeSettingImagePicker, array(7), array(6), instance of ArrayObject(7))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 1106,
          "call": "GraphQL\\Executor\\ReferenceExecutor::collectAndExecuteSubfields(GraphQLType: ThemeSettingImagePicker, instance of ArrayObject(1), array(6), array(7))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 974,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeObjectValue(GraphQLType: ThemeSettingImagePicker, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(6), array(7))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 789,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeAbstractValue(GraphQLType: ThemeSetting, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(6), array(7))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 741,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValue(GraphQLType: ThemeSetting, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(6), array(7))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 654,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValue(GraphQLType: ThemeSetting, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(6), array(7))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 887,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValueCatchingError(GraphQLType: ThemeSetting, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(6), array(7))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 761,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeListValue(GraphQLType: ThemeSetting, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(5), instance of Illuminate\\Support\\Collection(1))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 741,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValue(GraphQLType: ThemeSetting, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(5), instance of Illuminate\\Support\\Collection(1))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 654,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValue(GraphQLType: ThemeSetting, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(5), instance of Illuminate\\Support\\Collection(1))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 557,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValueCatchingError(GraphQLType: ThemeSetting, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(5), instance of Illuminate\\Support\\Collection(1))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 1195,
          "call": "GraphQL\\Executor\\ReferenceExecutor::resolveField(GraphQLType: ThemeSettingsCategory, array(3), instance of ArrayObject(1), array(5))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 1145,
          "call": "GraphQL\\Executor\\ReferenceExecutor::executeFields(GraphQLType: ThemeSettingsCategory, array(3), array(4), instance of ArrayObject(4))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 1106,
          "call": "GraphQL\\Executor\\ReferenceExecutor::collectAndExecuteSubfields(GraphQLType: ThemeSettingsCategory, instance of ArrayObject(1), array(4), array(3))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 793,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeObjectValue(GraphQLType: ThemeSettingsCategory, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(4), array(3))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 741,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValue(GraphQLType: ThemeSettingsCategory, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(4), array(3))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 654,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValue(GraphQLType: ThemeSettingsCategory, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(4), array(3))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 887,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValueCatchingError(GraphQLType: ThemeSettingsCategory, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(4), array(3))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 761,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeListValue(GraphQLType: ThemeSettingsCategory, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(3), instance of Illuminate\\Support\\Collection(10))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 741,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValue(GraphQLType: ThemeSettingsCategory, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(3), instance of Illuminate\\Support\\Collection(10))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 654,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValue(GraphQLType: ThemeSettingsCategory, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(3), instance of Illuminate\\Support\\Collection(10))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 557,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValueCatchingError(GraphQLType: ThemeSettingsCategory, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(3), instance of Illuminate\\Support\\Collection(10))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 1195,
          "call": "GraphQL\\Executor\\ReferenceExecutor::resolveField(GraphQLType: OnlineStoreTheme, array(11), instance of ArrayObject(1), array(3))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 1145,
          "call": "GraphQL\\Executor\\ReferenceExecutor::executeFields(GraphQLType: OnlineStoreTheme, array(11), array(2), instance of ArrayObject(12))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 1106,
          "call": "GraphQL\\Executor\\ReferenceExecutor::collectAndExecuteSubfields(GraphQLType: OnlineStoreTheme, instance of ArrayObject(1), array(2), array(11))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 793,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeObjectValue(GraphQLType: OnlineStoreTheme, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(2), array(11))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 654,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValue(GraphQLType: OnlineStoreTheme, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(2), array(11))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 557,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValueCatchingError(GraphQLType: OnlineStoreTheme, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(2), array(11))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 1195,
          "call": "GraphQL\\Executor\\ReferenceExecutor::resolveField(GraphQLType: OnlineStore, array(0), instance of ArrayObject(1), array(2))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 1145,
          "call": "GraphQL\\Executor\\ReferenceExecutor::executeFields(GraphQLType: OnlineStore, array(0), array(1), instance of ArrayObject(2))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 1106,
          "call": "GraphQL\\Executor\\ReferenceExecutor::collectAndExecuteSubfields(GraphQLType: OnlineStore, instance of ArrayObject(1), array(1), array(0))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 793,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeObjectValue(GraphQLType: OnlineStore, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(1), array(0))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 741,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValue(GraphQLType: OnlineStore, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(1), array(0))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 654,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValue(GraphQLType: OnlineStore, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(1), array(0))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 557,
          "call": "GraphQL\\Executor\\ReferenceExecutor::completeValueCatchingError(GraphQLType: OnlineStore, instance of ArrayObject(1), instance of GraphQL\\Type\\Definition\\ResolveInfo, array(1), array(0))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 1195,
          "call": "GraphQL\\Executor\\ReferenceExecutor::resolveField(GraphQLType: Query, null, instance of ArrayObject(1), array(1))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 264,
          "call": "GraphQL\\Executor\\ReferenceExecutor::executeFields(GraphQLType: Query, null, array(0), instance of ArrayObject(2))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\ReferenceExecutor.php",
          "line": 215,
          "call": "GraphQL\\Executor\\ReferenceExecutor::executeOperation(instance of GraphQL\\Language\\AST\\OperationDefinitionNode, null)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Executor\\Executor.php",
          "line": 156,
          "call": "GraphQL\\Executor\\ReferenceExecutor::doExecute()"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\GraphQL.php",
          "line": 162,
          "call": "GraphQL\\Executor\\Executor::promiseToExecute(instance of GraphQL\\Executor\\Promise\\Adapter\\SyncPromiseAdapter, instance of GraphQL\\Type\\Schema, instance of GraphQL\\Language\\AST\\DocumentNode, null, instance of Nuwave\\Lighthouse\\Schema\\Context, array(1), 'OnlineStoreTheme', null)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\GraphQL.php",
          "line": 94,
          "call": "GraphQL\\GraphQL::promiseToExecute(instance of GraphQL\\Executor\\Promise\\Adapter\\SyncPromiseAdapter, instance of GraphQL\\Type\\Schema, instance of GraphQL\\Language\\AST\\DocumentNode, null, instance of Nuwave\\Lighthouse\\Schema\\Context, array(1), 'OnlineStoreTheme', null, array(29))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\GraphQL.php",
          "line": 268,
          "call": "GraphQL\\GraphQL::executeQuery(instance of GraphQL\\Type\\Schema, instance of GraphQL\\Language\\AST\\DocumentNode, null, instance of Nuwave\\Lighthouse\\Schema\\Context, array(1), 'OnlineStoreTheme', null, array(29))"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\GraphQL.php",
          "line": 203,
          "call": "Nuwave\\Lighthouse\\GraphQL::executeParsedQuery(instance of GraphQL\\Language\\AST\\DocumentNode, instance of Nuwave\\Lighthouse\\Schema\\Context, array(1), null, 'OnlineStoreTheme')"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\GraphQL.php",
          "line": 162,
          "call": "Nuwave\\Lighthouse\\GraphQL::parseAndExecuteQuery('query OnlineStoreTheme($themeId: ID!) {\n  onlineStore {\n    theme(id: $themeId) {\n      id\n      editable\n      createdAt\n      editedAt\n      name\n      role\n      previewable\n      url\n      themeStoreThemeId\n      metadata {\n        author\n        description\n        documentationUrl\n        logoUrl\n        name\n        supportEmail\n        supportUrl\n        version\n        __typename\n      }\n      themeSettingsCategories {\n        ...ThemeSettingsCategory\n        __typename\n      }\n      __typename\n    }\n    __typename\n  }\n  __typename\n}\n\nfragment ThemeSettingsCategory on ThemeSettingsCategory {\n  id\n  title\n  settings {\n    ...ThemeSetting\n    __typename\n  }\n  __typename\n}\n\nfragment ThemeSetting on ThemeSetting {\n  ... on ThemeSettingHeader {\n    ...ThemeSettingHeader\n    __typename\n  }\n  ... on ThemeSettingCollection {\n    ...ThemeSettingCollection\n    __typename\n  }\n  ... on ThemeSettingColor {\n    ...ThemeSettingColor\n    __typename\n  }\n  ... on ThemeSettingFont {\n    ...ThemeSettingFont\n    __typename\n  }\n  ... on ThemeSettingImage {\n    ...ThemeSettingImage\n    __typename\n  }\n  ... on ThemeSettingImagePicker {\n    ...ThemeSettingImagePicker\n    __typename\n  }\n  ... on ThemeSettingRange {\n    ...ThemeSettingRange\n    __typename\n  }\n  ... on ThemeSettingCheckbox {\n    ...ThemeSettingCheckbox\n    __typename\n  }\n  __typename\n}\n\nfragment ThemeSettingCommon on ThemeSetting {\n  id\n  info\n  label\n  settingId\n  type\n  __typename\n}\n\nfragment ThemeSettingHeader on ThemeSettingHeader {\n  ...ThemeSettingCommon\n  content\n  __typename\n}\n\nfragment ThemeSettingCollection on ThemeSettingCollection {\n  ...ThemeSettingCommon\n  collectionValue: value\n  __typename\n}\n\nfragment ThemeSettingColor on ThemeSettingColor {\n  ...ThemeSettingCommon\n  colorDefault: default\n  colorValue: value\n  __typename\n}\n\nfragment ThemeSettingFont on ThemeSettingFont {\n  ...ThemeSettingCommon\n  options {\n    label\n    value\n    __typename\n  }\n  fontValue: value\n  __typename\n}\n\nfragment ThemeSettingImage on ThemeSettingImage {\n  ...ThemeSettingCommon\n  imageValue: value\n  __typename\n}\n\nfragment ThemeSettingImagePicker on ThemeSettingImagePicker {\n  ...ThemeSettingCommon\n  imagePickerValue: value\n  __typename\n}\n\nfragment ThemeSettingRange on ThemeSettingRange {\n  ...ThemeSettingCommon\n  rangeDefault: default\n  min\n  max\n  step\n  unit\n  rangeValue: value\n  __typename\n}\n\nfragment ThemeSettingCheckbox on ThemeSettingCheckbox {\n  ...ThemeSettingCommon\n  checkboxDefault: default\n  checkboxValue: value\n  __typename\n}\n\n\n', instance of Nuwave\\Lighthouse\\Schema\\Context, array(1), null, 'OnlineStoreTheme')"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\GraphQL.php",
          "line": 121,
          "call": "Nuwave\\Lighthouse\\GraphQL::executeOperation(instance of GraphQL\\Server\\OperationParams, instance of Nuwave\\Lighthouse\\Schema\\Context)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\Support\\Utils.php",
          "line": 99,
          "call": "Nuwave\\Lighthouse\\GraphQL::Nuwave\\Lighthouse\\{closure}(instance of GraphQL\\Server\\OperationParams)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\GraphQL.php",
          "line": 120,
          "call": "Nuwave\\Lighthouse\\Support\\Utils::applyEach(instance of Closure, instance of GraphQL\\Server\\OperationParams)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\Support\\Http\\Controllers\\GraphQLController.php",
          "line": 32,
          "call": "Nuwave\\Lighthouse\\GraphQL::executeOperationOrOperations(instance of GraphQL\\Server\\OperationParams, instance of Nuwave\\Lighthouse\\Schema\\Context)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\ControllerDispatcher.php",
          "line": 48,
          "call": "Nuwave\\Lighthouse\\Support\\Http\\Controllers\\GraphQLController::__invoke(instance of Illuminate\\Http\\Request, instance of Nuwave\\Lighthouse\\GraphQL, instance of Illuminate\\Events\\Dispatcher, instance of Laragraph\\Utils\\RequestParser, instance of Nuwave\\Lighthouse\\Execution\\SingleResponse, instance of Nuwave\\Lighthouse\\Execution\\ContextFactory)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Route.php",
          "line": 219,
          "call": "Illuminate\\Routing\\ControllerDispatcher::dispatch(instance of Illuminate\\Routing\\Route, instance of Nuwave\\Lighthouse\\Support\\Http\\Controllers\\GraphQLController, '__invoke')"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Route.php",
          "line": 176,
          "call": "Illuminate\\Routing\\Route::runController()"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php",
          "line": 681,
          "call": "Illuminate\\Routing\\Route::run()"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
          "line": 130,
          "call": "Illuminate\\Routing\\Router::Illuminate\\Routing\\{closure}(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\Support\\Http\\Middleware\\AttemptAuthentication.php",
          "line": 34,
          "call": "Illuminate\\Pipeline\\Pipeline::Illuminate\\Pipeline\\{closure}(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
          "line": 171,
          "call": "Nuwave\\Lighthouse\\Support\\Http\\Middleware\\AttemptAuthentication::handle(instance of Illuminate\\Http\\Request, instance of Closure)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\Support\\Http\\Middleware\\AcceptJson.php",
          "line": 27,
          "call": "Illuminate\\Pipeline\\Pipeline::Illuminate\\Pipeline\\{closure}(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
          "line": 171,
          "call": "Nuwave\\Lighthouse\\Support\\Http\\Middleware\\AcceptJson::handle(instance of Illuminate\\Http\\Request, instance of Closure)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
          "line": 105,
          "call": "Illuminate\\Pipeline\\Pipeline::Illuminate\\Pipeline\\{closure}(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php",
          "line": 683,
          "call": "Illuminate\\Pipeline\\Pipeline::then(instance of Closure)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php",
          "line": 658,
          "call": "Illuminate\\Routing\\Router::runRouteWithinStack(instance of Illuminate\\Routing\\Route, instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php",
          "line": 624,
          "call": "Illuminate\\Routing\\Router::runRoute(instance of Illuminate\\Http\\Request, instance of Illuminate\\Routing\\Route)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php",
          "line": 613,
          "call": "Illuminate\\Routing\\Router::dispatchToRoute(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Kernel.php",
          "line": 170,
          "call": "Illuminate\\Routing\\Router::dispatch(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
          "line": 130,
          "call": "Illuminate\\Foundation\\Http\\Kernel::Illuminate\\Foundation\\Http\\{closure}(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\app\\Http\\Middleware\\ChangeAppUrlMiddleware.php",
          "line": 23,
          "call": "Illuminate\\Pipeline\\Pipeline::Illuminate\\Pipeline\\{closure}(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
          "line": 171,
          "call": "App\\Http\\Middleware\\ChangeAppUrlMiddleware::handle(instance of Illuminate\\Http\\Request, instance of Closure)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest.php",
          "line": 21,
          "call": "Illuminate\\Pipeline\\Pipeline::Illuminate\\Pipeline\\{closure}(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
          "line": 171,
          "call": "Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest::handle(instance of Illuminate\\Http\\Request, instance of Closure)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest.php",
          "line": 21,
          "call": "Illuminate\\Pipeline\\Pipeline::Illuminate\\Pipeline\\{closure}(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
          "line": 171,
          "call": "Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest::handle(instance of Illuminate\\Http\\Request, instance of Closure)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\ValidatePostSize.php",
          "line": 27,
          "call": "Illuminate\\Pipeline\\Pipeline::Illuminate\\Pipeline\\{closure}(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
          "line": 171,
          "call": "Illuminate\\Foundation\\Http\\Middleware\\ValidatePostSize::handle(instance of Illuminate\\Http\\Request, instance of Closure)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\CheckForMaintenanceMode.php",
          "line": 63,
          "call": "Illuminate\\Pipeline\\Pipeline::Illuminate\\Pipeline\\{closure}(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
          "line": 171,
          "call": "Illuminate\\Foundation\\Http\\Middleware\\CheckForMaintenanceMode::handle(instance of Illuminate\\Http\\Request, instance of Closure)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\fideloper\\proxy\\src\\TrustProxies.php",
          "line": 57,
          "call": "Illuminate\\Pipeline\\Pipeline::Illuminate\\Pipeline\\{closure}(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
          "line": 171,
          "call": "Fideloper\\Proxy\\TrustProxies::handle(instance of Illuminate\\Http\\Request, instance of Closure)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\dingo\\api\\src\\Http\\Middleware\\Request.php",
          "line": 111,
          "call": "Illuminate\\Pipeline\\Pipeline::Illuminate\\Pipeline\\{closure}(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
          "line": 171,
          "call": "Dingo\\Api\\Http\\Middleware\\Request::handle(instance of Illuminate\\Http\\Request, instance of Closure)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
          "line": 105,
          "call": "Illuminate\\Pipeline\\Pipeline::Illuminate\\Pipeline\\{closure}(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Kernel.php",
          "line": 145,
          "call": "Illuminate\\Pipeline\\Pipeline::then(instance of Closure)"
        },
        {
          "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Kernel.php",
          "line": 110,
          "call": "Illuminate\\Foundation\\Http\\Kernel::sendRequestThroughRouter(instance of Illuminate\\Http\\Request)"
        },
        {
          "file": "E:\\wwwroot\\object\\public\\index.php",
          "line": 57,
          "call": "Illuminate\\Foundation\\Http\\Kernel::handle(instance of Illuminate\\Http\\Request)"
        }
      ]
    }
  ],
  "data": {}
}

2、打印响应的对象,其值为 string(0) “”。

object(Modules\ThemeSetting\Schema\Dto\Theme\SettingCategory)#11928 (3) {
  ["name":protected]=>
  string(12) "网站图标"
  ["settings":protected]=>
  array(1) {
    [0]=>
    object(Modules\ThemeSetting\Schema\Types\ImagePickerType)#11930 (5) {
      ["value":"Modules\ThemeSetting\Schema\Types\ImagePickerType":private]=>
      string(0) ""
      ["id":"Modules\ThemeSetting\Schema\Types\IdentifiedType":private]=>
      string(7) "favicon"
      ["label":"Modules\ThemeSetting\Schema\Types\BaseType":private]=>
      string(12) "网站图标"
      ["info":"Modules\ThemeSetting\Schema\Types\BaseType":private]=>
      string(142) "Favicon为网站的缩略标识,会展示在浏览器标签、收藏夹,建议尺寸为32x32 px,大小限制:≤8M,最大像素20MP。"
      ["type":"Modules\ThemeSetting\Schema\Types\BaseType":private]=>
      string(12) "image_picker"
    }
  }
  ["identified":"Modules\ThemeSetting\Schema\Dto\Theme\SettingCategory":private]=>
  array(1) {
    ["favicon"]=>
    object(Modules\ThemeSetting\Schema\Types\ImagePickerType)#11930 (5) {
      ["value":"Modules\ThemeSetting\Schema\Types\ImagePickerType":private]=>
      string(0) ""
      ["id":"Modules\ThemeSetting\Schema\Types\IdentifiedType":private]=>
      string(7) "favicon"
      ["label":"Modules\ThemeSetting\Schema\Types\BaseType":private]=>
      string(12) "网站图标"
      ["info":"Modules\ThemeSetting\Schema\Types\BaseType":private]=>
      string(142) "Favicon为网站的缩略标识,会展示在浏览器标签、收藏夹,建议尺寸为32x32 px,大小限制:≤8M,最大像素20MP。"
      ["type":"Modules\ThemeSetting\Schema\Types\BaseType":private]=>
      string(12) "image_picker"
    }
  }
}

3、在 GraphQL 中设置,value: URL 。是允许为 null 的。但是当为 string(0) “” 时,则会验证其是否符合 URL 规则。当其值为 null 或者 http://www.xxx.com 时,皆不再报错。

  {
 "id": "96b1c8b9-5b18-4760-9e26-50ab009ac011/settings/favicon",
 "info": "Favicon为网站的缩略标识,会展示在浏览器标签、收藏夹,建议尺寸为32x32 px,大小限制:≤8M,最大像素20MP。",
 "label": "网站图标",
 "settingId": "favicon",
 "type": "IMAGE_PICKER",
 "__typename": "ThemeSettingImagePicker",
 "imagePickerValue": "http://www.xxx.com"
  }
  {
 "id": "96b1c8b9-5b18-4760-9e26-50ab009ac011/settings/share__default_image",
 "info": "当你在社交媒体上分享店铺或商品链接时,我们将使用该背景图。",
 "label": "图片",
 "settingId": "share__default_image",
 "type": "IMAGE_PICKER",
 "__typename": "ThemeSettingImagePicker",
 "imagePickerValue": null
  }
永夜