Error 522 connection timeout(host error)

[kingruby394]

My site server works fine, but I get the Error 522 Connection timeout.
How can I fix this issue?
this backend is developed by php symfony and Next.js in frontend.

Please help me
thank you

[MarkMeyer]

As search for #CommunityTip 522, asmentioned in the text area, would have revealed the following:

Community Tip - Fixing Error 522: Connection timed out

Error Try the suggestions in this Community Tip to help you fix Error 522 “ERR CONNECTION TIMED OUT” in Google Chrome or “The connection has timed out” in Firefox. Background A 522 error happens when a TCP connection to the web server could not be established. This typically happens when Cloudflare requests to the origin (your webserver) get blocked. When this happens, you’ll see “ERR_CONNECTION_TIMED_OUT”. Quick Fix Ideas Make sure that you’re not blocking Cloudflare IPs in .htaccess, ip…

It’s most likely a host error or misconfiguration.

[kingruby394]

misconfiguration

Thanks Mark, But my server works correctly and server is fine. and the site sometimes run but after a few hours and a few days, it had issues.
Also, where can I see the “ERR_CONNECTION_TIMED_OUT”?