Web Server is down error 521 - issue comes and goes

Implemented cloudfare with AWS. Every few days if we visit our site we’ll get an error, web server is down, error 521. Then if we refresh in let’s say an hour, the site loads fine.

Wondering if anyone has a solution for this or has experience with this particular issue.

Thanks so much in advance for the help

Hello there,

May I suggest you to check out this Tutorial and the solution:

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