Error 522 connection timed out only on cloudflare

I am getting error 522 on my website, I know it’s some issue with my server
but I have multiple websites on that hosting account. The websites that use cloudflare are showing this error other are working fine. Please help me

A 522 error typically happens when Cloudflare requests to the origin (your webserver) get blocked. Review the suggestions in this Community Tip for troubleshooting ideas.