Swagger-ui: Curl is generated and Curl is correct.But my Code is Undocumented, Details are TypeError: Failed to fetch, and the Response headers are not content

[LivesMountain]

When reporting an issue, please provide the following details:

• swagger-ui version
  3v.I downloaded the swagger from the master branch
• a swagger file reproducing the issue
  As shown here, when I click Try it out, Curl is generated and Curl is correct.But my Code is Undocumented, Details are TypeError: Failed to fetch, and the Response headers are not content.Please have a look, thanks

I don't know why I can't upload pictures.I'm sorry

[webron]

I'm afraid the issue just isn't clear. Can you provide more details?

[shockey]

Can you check in the console, for where the request is going? Please provide the exact version you're using as well, you can type versions in the console to see what you have.

[LivesMountain]

@webron Now I can upload pictures，Please take a look，thank you

[LivesMountain]

@shockey Sorry, its version is 3.0.13

[webron]

Thanks. Can you check and share with us the error you're getting in your browser's console?

[LivesMountain]

@webron I appreciate your prompt reply
The first time I clicked Try it out


After that, the console only has this information

[LivesMountain]

@webron I've seen you answer other questions about CORS, my "swagger.yaml" file and the "swagger-ui" on the same port under the same IP

[webron]

@LivesMountain The CORS applies to two separate things - between swagger-ui and the yaml file, but also between swagger-ui and the application itself. Is the swagger-ui in the same ip and port as the app? If not, you'd need to enable CORS in the application.

[LivesMountain]

@webron
You mean I don't have a CORS between my swagger-ui and app so my "Code = Undocumented" and "Details = TypeError: Failed to fetch"
May I Ask you what I need to do to solve this problem, whether my swagger-ui Set what parameter, or application needs to support CORS.thank you
Also, can the swagger-ui cancel the CORS mechanism?

[webron]

Based on the error in the console, it seems like that's the cause of the issue. I'm afraid the CORS requirement is a browser restriction, and we cannot disable it from swagger-ui.

[shockey]

@LivesMountain your application needs to send back a Access-Control-Allow-Origin: * header in order to allow swagger-ui on a different host/port to communicate with it.

More info here: https://enable-cors.org/server.html

[LivesMountain]

@webron @shockey Thank you for your timely reply。The problem has been solved

[EchoSuzaku]

I am a novice, without any experience and basic knowledge, finally solved, thanks