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Hello,
I am working on a website on WordPress and it's suddenly got a 521 error from cloudflare. I can't access it via ftp and am still trying to find out who the host is. Is there any way to resolve this from what little information I currently have?
521 means that CF can’t connect to the web server. Something has crashed in the server – this could be any number of things eg ran out of memory, infinite loop bug, etc.
You need to access the web server’s error logs.