Getting “TypeError: Failed to fetch” when the request hasn’t actually failed

February 28, 2022

Error Messages

Here we are facing an error called getting “TypeError: Failed to fetch” when the request hasn’t actually failed in Javascript. Many reasons may cause this problem, and the article below will provide you with some solutions to fix this error. Stay tuned for more details!

getting “TypeError: Failed to fetch” when the request hasn’t actually failed

What Causes The Error?

The error might arise for many reasons.

  • The fetch() function has been executed with an invalid or unfinished URL.
  • The server you are sending a request to does not return the right CORS headers.
  • An incorrect protocol in the address
  • The fetch() function has been executed with the incorrect method or headers.

Here we are executing the fetch API with React application. We’re getting a correct answer, but the application throws an error and reports it. Here’s what we received.

“TypeError: failed to fetch”.

What To Do To Fix The getting “TypeError: Failed to fetch” when the request hasn’t actually failed Error?

To fix the error, ensure that you provide the right setting to the method, such as the location, HTTP, headers, and where you are sending the request. Input  “HTTP://” before “localhost” in the address to solve the problem.

The Solutions

Solution 1

The problem might be within the response you’re getting from the backend. If everything functions well, the issue might come from the headers. Examine the headers for the ACAO (Access-Control-Allow-Origin).

The fetch API may return an error even after obtaining a response when the demand’s source does not match.

Solution 2

Check to see if you deliver the right headers if the settings you provide to the fetch function are valid. Depending on the specific situation, you may need to adjust the settings. Open the Internet Connectivity tab, click request, and see if the client delivers these headers.

The headings are as follows:

  • Access-Control-Allow-Origin specifies which sources are permitted to send
  • Access-Control-Allow-Methods specifies which methods origins are permitted
  • Access-Control-Allow-Headers specifies which headers origins are permitted 

If CORS alternatives do not function, try adding the asterisk sign in the source. When it is included in the ACAO header, any source will be permitted to connect to the server.

Conclusion

The issue getting “TypeError: Failed to fetch” when the request hasn’t actually failed can be solved easily with the solutions we have provided in our article. Hope our answer is useful for you and helps solve your problem.

Please comment with your questions if any concerns are relevant to the error. Also, please send us your most suitable solution to provide you with better ideas. Thank you!

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