502 bad gateway related to geo ip

Hi

I member of the forum was getting some random 502 bad gateway errors and i thought that something was wrong with my php and in general i check also nginx and mariadb and all was ok as didn't hit any limit and in general the forum has a very low traffic as much as 50 users online ......

I was not able to reproduce it on my end and then i enable a vpn on users country location and i had that issue randomly by clicking about 10 times i got that error about 5 times....

I know that you will recommend me to enable php debugging but that seems very specific to Geo ip......Maybe Cloudflare can be the issue?Or php Geo location module or Nginx related settings?

Any ideas?

Thanks

 

Let's find that hard bug

Checking on my logs i can see that started at 13 of September and that day i was just update Nginx to latest version...

Don't know if that helps and have an idea now where to look at....

Downgrading and checking now....

 

I am not getting cloudflare-nginx .....

Reverting Nginx didn't help....

Reverting php now.....

 

Php revert didn't help

error log info:

 

Final results

The specific link that doesn't work:

Code:

http://www.domain.com/index.php?app=core&module=usercp

works great when i use the https version of the site:

Code:

https://www.domain.com/index.php?app=core&module=usercp

Don't know what could be the problem .....

Nothing different on both vhosts config files...

 

Nope