Error 521 intermittently

Hello,

From time to time I get 521 errors coming and going. It is not permanent but I do not understand what it is due to? I have a WP rockjet cache plugin but even when I deactivate it, the problem is still present. I tried to see your recommendations but it didn’t help me unfortunately. Thanks in advance here is my site: https://amisducocker.com

As the recommendations say, this is a connection error with the host.

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.

Thx but why t’s just sometimes ?

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