Some customers have 502 errors, If they change their IP, 502 disappear

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What is the name of the domain?

What is the error number?

502

What is the issue you’re encountering

Some customers have 502 errors, If they change their IP, 502 disappear

What steps have you taken to resolve the issue?

Change IP of the customer and it’s ok

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The 502/504 errors are caused by a problem connecting to an upstream server - meaning your server is trying to initiate a process and this fails to work as expected or times out. In most cases of 502 / 504 errors, back-end servers are not communicating correctly. When this happens, you will see color page with Cloudflare branding and the Error 502 Bad Gateway or Error 504 Gateway Timeout. Review this Community Tip for fixing 502 or 504 gateway errors.

Can you attach a screenshot of the 502 error?

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