Random 520 error on my prestashop website

i get 520 error some times i have prestashop my error log empty when stop cloudflare work correctly
Ray ID: 879a4a7b09f511b3

Heyy there,

This is what we are getting from the 520.

context: while reading h2 header cause: connection reset, status: 520

You may want to review this:

Do check for these common causes:

  • Origin web server application crashes
  • Cloudflare IPsOpen external link not allowed at your origin
  • Headers exceeding 16 KB (typically due to too many cookies)
  • An empty response from the origin web server that lacks an HTTP status code or response body
  • Missing response headers or origin web server not returning proper HTTP error responsesOpen external link.
    • upstream prematurely closed connection while reading response header from upstream is a common error we may notice in our logs. This indicates the origin web server was having issues which caused Cloudflare to generate 520 errors.

i found solution i disable HTTP/2 to origin

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