502 Bad request randomically

[Matteo]

Hi everyone,

we have a problem on our side.
Basically we have a checkout handled by:

 

With a simple conf:

• PHP 7.4
• PHP FPM
• Apache
• Prestashop 1.7.8
• PHP ini tuning (memory, max input ecc)

sometimes we receive an error 502 when some of us try to log in.

Randomically the problem is solved by deleting the browser cache or with private browsing, but sometimes the problem persist. We didn't receive any error on server.

Can you please help us to look into the problem?

 

Thx to all in advance,

Matteo

[Prestashop Addict]

Hi Matteo, do you have a server cache system, and/or a CDN?

[Matteo]

Hello,

nope, but we ended up with cookie.

There a known issue with prestashop cookie size causing header bigger than normal.

We are trying to look for a fix  but it seems that dev didn't switch to something light, so the only answer is Apache