How do I fix “web server is returning an unknown error” issue quickly?

[Author Anshul]

I am facing this error- web server is returning an unknown error. Even the server doesn't know about the error. How can I fix this issue without breaking it and quickly?

 

[robertwilliam]

To quickly fix a "web server is returning an unknown error" issue, which is often indicated by a Cloudflare error 520, try these steps: clear browser cache and cookies, ensure your origin server is running and configured correctly, check your Cloudflare DNS settings, and restart the web server.

 

[niyati]

Usually, the issue “web server is giving an error that is unknown” can be quickly repaired:

Either refresh the page or use a different web browser.

Clear the stored cache and cookies on your computer.

Look at the status page of the server or hosting provider.

Go through the error logs on your server.

Turn the server or related services off and then on again.