Error in Postman: Analysis and solution of self-signed SSL certificates are being blocked

1. Request in Postman: https://api.channel-pub.wjdev.chinamcloud.cn/qq/v1/qq-cw-apps?group_id=spider , error: self-signed ssl certificates are being blocked, as shown in Figure 1

Figure 1

Could not get any response
There was an error connecting to https://api.channel-pub.wjdev.chinamcloud.cn/qq/v1/qq-cw-apps?group_id=spider.
Why this might have happened:
The server could bet send a response:
Ensure that the backend is working properly
Self-Signed SSL certificates are being blocked:
Fix this by turning offSSL Certificate VerificationIn settings > general
Proxy Configured Incorrectly
Ensure that proxy is configured correctly in settings > proxy
request timeout:
Change request timeout in settings > general

2. In the browser firefox Medium request: https://api.channel-pub.wjdev.chinamcloud.cn/qq/v1/qq-cw-apps?group_id=spider , prompt: api.channel-pub.wjdev.chinamcloud.cn uses an invalid security certificate. , as shown in Figure 2

Figure 2

Your connection is not safe

The administrator of api.channel-pub.wjdev.chinamcloud.cn is not properly configured for this website. To avoid the theft of your information, Firefox has not established a connection to this website.

Learn more about…

Report such errors to help Mozilla identify and intercept malicious websites

api.channel-pub.wjdev.chinamcloud.cn uses an invalid security certificate.

The certificate is not trusted because of its self-signed.
This certificate is only valid.
The expiration date of the certificate is 11:31:52 on February 8, 2019. The current date is 1:49 pm on February 18, 2019.

Error code: mozilla_pkix_error_self_signed_cert

3. Add a security exception to the browser Firefox, as shown in Figure 3

Figure 3

4. In the browser firefox Medium request: https://api.channel-pub.wjdev.chinamcloud.cn/qq/v1/qq-cw-apps?group_id=spider , respond 200, as shown in Figure 4

Figure 4

5. In Postman, turn off “SSL Certificate Verification” in “Settings” > “General” to solve this problem, as shown in Figure 5

Figure 5

6. Request in Postman: https://api.channel-pub.wjdev.chinamcloud.cn/qq/v1/qq-cw-apps?group_id=spider , the response 200, as shown in Figure 6

Figure 6