在 Laravel 6 中报错：Target [Interface] is not instantiable while building [Resolver]

1、在 Laravel 6 中报错：Target [Interface] is not instantiable while building [Resolver]。如图1

图1

{
    "message": "Target [Modules\\ThemeSetting\\Schema\\ThemeSchemaLoaderInterface] is not instantiable while building [Modules\\ThemeStore\\Resolver\\OnlineStoreThemeResolver].",
    "exception": "Illuminate\\Contracts\\Container\\BindingResolutionException",
    "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Container\\Container.php",
    "line": 978,
    "trace": [
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Container\\Container.php",
            "line": 812,
            "function": "notInstantiable",
            "class": "Illuminate\\Container\\Container",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Container\\Container.php",
            "line": 681,
            "function": "build",
            "class": "Illuminate\\Container\\Container",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Application.php",
            "line": 785,
            "function": "resolve",
            "class": "Illuminate\\Container\\Container",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Container\\Container.php",
            "line": 629,
            "function": "resolve",
            "class": "Illuminate\\Foundation\\Application",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Application.php",
            "line": 770,
            "function": "make",
            "class": "Illuminate\\Container\\Container",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Container\\Container.php",
            "line": 945,
            "function": "make",
            "class": "Illuminate\\Foundation\\Application",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Container\\Container.php",
            "line": 873,
            "function": "resolveClass",
            "class": "Illuminate\\Container\\Container",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Container\\Container.php",
            "line": 834,
            "function": "resolveDependencies",
            "class": "Illuminate\\Container\\Container",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Container\\Container.php",
            "line": 681,
            "function": "build",
            "class": "Illuminate\\Container\\Container",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Application.php",
            "line": 785,
            "function": "resolve",
            "class": "Illuminate\\Container\\Container",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Container\\Container.php",
            "line": 629,
            "function": "resolve",
            "class": "Illuminate\\Foundation\\Application",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Application.php",
            "line": 770,
            "function": "make",
            "class": "Illuminate\\Container\\Container",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\helpers.php",
            "line": 120,
            "function": "make",
            "class": "Illuminate\\Foundation\\Application",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\Support\\Utils.php",
            "line": 58,
            "function": "app"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\Schema\\Directives\\FieldDirective.php",
            "line": 45,
            "function": "constructResolver",
            "class": "Nuwave\\Lighthouse\\Support\\Utils",
            "type": "::"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\Schema\\Factories\\FieldFactory.php",
            "line": 68,
            "function": "resolveField",
            "class": "Nuwave\\Lighthouse\\Schema\\Directives\\FieldDirective",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\Schema\\TypeRegistry.php",
            "line": 369,
            "function": "handle",
            "class": "Nuwave\\Lighthouse\\Schema\\Factories\\FieldFactory",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Type\\Definition\\UnresolvedFieldDefinition.php",
            "line": 39,
            "function": "Nuwave\\Lighthouse\\Schema\\{closure}",
            "class": "Nuwave\\Lighthouse\\Schema\\TypeRegistry",
            "type": "::"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Type\\Definition\\TypeWithFields.php",
            "line": 45,
            "function": "resolve",
            "class": "GraphQL\\Type\\Definition\\UnresolvedFieldDefinition",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Type\\Definition\\TypeWithFields.php",
            "line": 33,
            "function": "findField",
            "class": "GraphQL\\Type\\Definition\\TypeWithFields",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Validator\\Rules\\OverlappingFieldsCanBeMerged.php",
            "line": 256,
            "function": "getField",
            "class": "GraphQL\\Type\\Definition\\TypeWithFields",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Validator\\Rules\\OverlappingFieldsCanBeMerged.php",
            "line": 165,
            "function": "internalCollectFieldsAndFragmentNames",
            "class": "GraphQL\\Validator\\Rules\\OverlappingFieldsCanBeMerged",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Validator\\Rules\\OverlappingFieldsCanBeMerged.php",
            "line": 96,
            "function": "getFieldsAndFragmentNames",
            "class": "GraphQL\\Validator\\Rules\\OverlappingFieldsCanBeMerged",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Validator\\Rules\\OverlappingFieldsCanBeMerged.php",
            "line": 64,
            "function": "findConflictsWithinSelectionSet",
            "class": "GraphQL\\Validator\\Rules\\OverlappingFieldsCanBeMerged",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Language\\Visitor.php",
            "line": 414,
            "function": "GraphQL\\Validator\\Rules\\{closure}",
            "class": "GraphQL\\Validator\\Rules\\OverlappingFieldsCanBeMerged",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Language\\Visitor.php",
            "line": 470,
            "function": "GraphQL\\Language\\{closure}",
            "class": "GraphQL\\Language\\Visitor",
            "type": "::"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Language\\Visitor.php",
            "line": 277,
            "function": "GraphQL\\Language\\{closure}",
            "class": "GraphQL\\Language\\Visitor",
            "type": "::"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Validator\\DocumentValidator.php",
            "line": 224,
            "function": "visit",
            "class": "GraphQL\\Language\\Visitor",
            "type": "::"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\Validator\\DocumentValidator.php",
            "line": 116,
            "function": "visitUsingRules",
            "class": "GraphQL\\Validator\\DocumentValidator",
            "type": "::"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\GraphQL.php",
            "line": 153,
            "function": "validate",
            "class": "GraphQL\\Validator\\DocumentValidator",
            "type": "::"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\webonyx\\graphql-php\\src\\GraphQL.php",
            "line": 94,
            "function": "promiseToExecute",
            "class": "GraphQL\\GraphQL",
            "type": "::"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\GraphQL.php",
            "line": 268,
            "function": "executeQuery",
            "class": "GraphQL\\GraphQL",
            "type": "::"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\GraphQL.php",
            "line": 203,
            "function": "executeParsedQuery",
            "class": "Nuwave\\Lighthouse\\GraphQL",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\GraphQL.php",
            "line": 162,
            "function": "parseAndExecuteQuery",
            "class": "Nuwave\\Lighthouse\\GraphQL",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\GraphQL.php",
            "line": 121,
            "function": "executeOperation",
            "class": "Nuwave\\Lighthouse\\GraphQL",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\Support\\Utils.php",
            "line": 99,
            "function": "Nuwave\\Lighthouse\\{closure}",
            "class": "Nuwave\\Lighthouse\\GraphQL",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\GraphQL.php",
            "line": 120,
            "function": "applyEach",
            "class": "Nuwave\\Lighthouse\\Support\\Utils",
            "type": "::"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\Support\\Http\\Controllers\\GraphQLController.php",
            "line": 32,
            "function": "executeOperationOrOperations",
            "class": "Nuwave\\Lighthouse\\GraphQL",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\ControllerDispatcher.php",
            "line": 48,
            "function": "__invoke",
            "class": "Nuwave\\Lighthouse\\Support\\Http\\Controllers\\GraphQLController",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Route.php",
            "line": 219,
            "function": "dispatch",
            "class": "Illuminate\\Routing\\ControllerDispatcher",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Route.php",
            "line": 176,
            "function": "runController",
            "class": "Illuminate\\Routing\\Route",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php",
            "line": 681,
            "function": "run",
            "class": "Illuminate\\Routing\\Route",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
            "line": 130,
            "function": "Illuminate\\Routing\\{closure}",
            "class": "Illuminate\\Routing\\Router",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\Support\\Http\\Middleware\\AttemptAuthentication.php",
            "line": 34,
            "function": "Illuminate\\Pipeline\\{closure}",
            "class": "Illuminate\\Pipeline\\Pipeline",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
            "line": 171,
            "function": "handle",
            "class": "Nuwave\\Lighthouse\\Support\\Http\\Middleware\\AttemptAuthentication",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\nuwave\\lighthouse\\src\\Support\\Http\\Middleware\\AcceptJson.php",
            "line": 27,
            "function": "Illuminate\\Pipeline\\{closure}",
            "class": "Illuminate\\Pipeline\\Pipeline",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
            "line": 171,
            "function": "handle",
            "class": "Nuwave\\Lighthouse\\Support\\Http\\Middleware\\AcceptJson",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
            "line": 105,
            "function": "Illuminate\\Pipeline\\{closure}",
            "class": "Illuminate\\Pipeline\\Pipeline",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php",
            "line": 683,
            "function": "then",
            "class": "Illuminate\\Pipeline\\Pipeline",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php",
            "line": 658,
            "function": "runRouteWithinStack",
            "class": "Illuminate\\Routing\\Router",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php",
            "line": 624,
            "function": "runRoute",
            "class": "Illuminate\\Routing\\Router",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Routing\\Router.php",
            "line": 613,
            "function": "dispatchToRoute",
            "class": "Illuminate\\Routing\\Router",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Kernel.php",
            "line": 170,
            "function": "dispatch",
            "class": "Illuminate\\Routing\\Router",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
            "line": 130,
            "function": "Illuminate\\Foundation\\Http\\{closure}",
            "class": "Illuminate\\Foundation\\Http\\Kernel",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\barryvdh\\laravel-debugbar\\src\\Middleware\\InjectDebugbar.php",
            "line": 67,
            "function": "Illuminate\\Pipeline\\{closure}",
            "class": "Illuminate\\Pipeline\\Pipeline",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
            "line": 171,
            "function": "handle",
            "class": "Barryvdh\\Debugbar\\Middleware\\InjectDebugbar",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\app\\Http\\Middleware\\ChangeAppUrlMiddleware.php",
            "line": 23,
            "function": "Illuminate\\Pipeline\\{closure}",
            "class": "Illuminate\\Pipeline\\Pipeline",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
            "line": 171,
            "function": "handle",
            "class": "App\\Http\\Middleware\\ChangeAppUrlMiddleware",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest.php",
            "line": 21,
            "function": "Illuminate\\Pipeline\\{closure}",
            "class": "Illuminate\\Pipeline\\Pipeline",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
            "line": 171,
            "function": "handle",
            "class": "Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest.php",
            "line": 21,
            "function": "Illuminate\\Pipeline\\{closure}",
            "class": "Illuminate\\Pipeline\\Pipeline",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
            "line": 171,
            "function": "handle",
            "class": "Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\ValidatePostSize.php",
            "line": 27,
            "function": "Illuminate\\Pipeline\\{closure}",
            "class": "Illuminate\\Pipeline\\Pipeline",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
            "line": 171,
            "function": "handle",
            "class": "Illuminate\\Foundation\\Http\\Middleware\\ValidatePostSize",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Middleware\\CheckForMaintenanceMode.php",
            "line": 63,
            "function": "Illuminate\\Pipeline\\{closure}",
            "class": "Illuminate\\Pipeline\\Pipeline",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
            "line": 171,
            "function": "handle",
            "class": "Illuminate\\Foundation\\Http\\Middleware\\CheckForMaintenanceMode",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\fideloper\\proxy\\src\\TrustProxies.php",
            "line": 57,
            "function": "Illuminate\\Pipeline\\{closure}",
            "class": "Illuminate\\Pipeline\\Pipeline",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
            "line": 171,
            "function": "handle",
            "class": "Fideloper\\Proxy\\TrustProxies",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\dingo\\api\\src\\Http\\Middleware\\Request.php",
            "line": 111,
            "function": "Illuminate\\Pipeline\\{closure}",
            "class": "Illuminate\\Pipeline\\Pipeline",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
            "line": 171,
            "function": "handle",
            "class": "Dingo\\Api\\Http\\Middleware\\Request",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Pipeline\\Pipeline.php",
            "line": 105,
            "function": "Illuminate\\Pipeline\\{closure}",
            "class": "Illuminate\\Pipeline\\Pipeline",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Kernel.php",
            "line": 145,
            "function": "then",
            "class": "Illuminate\\Pipeline\\Pipeline",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\vendor\\laravel\\framework\\src\\Illuminate\\Foundation\\Http\\Kernel.php",
            "line": 110,
            "function": "sendRequestThroughRouter",
            "class": "Illuminate\\Foundation\\Http\\Kernel",
            "type": "->"
        },
        {
            "file": "E:\\wwwroot\\object\\public\\index.php",
            "line": 57,
            "function": "handle",
            "class": "Illuminate\\Foundation\\Http\\Kernel",
            "type": "->"
        }
    ]
}

2、查看 /Modules/ThemeStore/Providers/ThemeStoreServiceProvider.php，提示 未定义的类 ‘ThemeSchemaLoaderInterface’。如图2

图2

3、但是，可以确认 类 ‘ThemeSchemaLoaderInterface’ 是存在的。最后发现 use 的路径有误。删掉掉路径中的 Theme\。IDE 不再提示。如图3

图3

4、执行命令：php artisan list 时报错：Illuminate\Contracts\Container\BindingResolutionException : Target class [Modules\ThemeStore\Console\AssetCdn\SyncCommand] does not exist.

PS E:\wwwroot\object> php artisan list

   Illuminate\Contracts\Container\BindingResolutionException  : Target class [Modules\ThemeStore\Console\AssetCdn\SyncCommand] does not exist.

  at E:\wwwroot\object\vendor\laravel\framework\src\Illuminate\Container\Container.php:805
    801|
    802|         try {
    803|             $reflector = new ReflectionClass($concrete);
    804|         } catch (ReflectionException $e) {
  > 805|             throw new BindingResolutionException("Target class [$concrete] does not exist.", 0, $e);
    806|         }
    807|
    808|         // If the type is not instantiable, the developer is attempting to resolve
    809|         // an abstract type such as an Interface or Abstract Class and there is

  Exception trace:

  1   ReflectionException::("Class Modules\ThemeStore\Console\AssetCdn\SyncCommand does not exist")
      E:\wwwroot\object\vendor\laravel\framework\src\Illuminate\Container\Container.php:803

  2   ReflectionClass::__construct("Modules\ThemeStore\Console\AssetCdn\SyncCommand")
      E:\wwwroot\object\vendor\laravel\framework\src\Illuminate\Container\Container.php:803

  Please use the argument -v to see more details.
PS E:\wwwroot\object>

5、查看 /Modules/ThemeStore/Providers/ThemeStoreServiceProvider.php ，确定 Consoles\AssetCdn\SyncCommand::class 在相应路径下不存在。删除掉相应的调用。如图4

图4

6、再次执行命令：php artisan list 时成功。