Wordpress Website Error 521 - cloudflare connected to Google cloud

Hi we are using cloudflare to our wordpress website which we hosted on Google cloud server. But today we got an error. Please check image and give me tips.

Hi, so here are the Community Tips that are available by searching in the Community…

I see you put 521 in the title, but the image shows 522, so I’ll put both. Follow the second one first, I would suggest.

A 521 error happens when Cloudflare is unable to make a TCP connection to your origin server. Review the suggestions in this Community Tip for Quick Fix Ideas.

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.

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