502 error - only on checkout on wp + wc..

[traskowski]

Hey,
I have DirectAdmin installed with OpenLiteSpeed, but I’m getting a 502 error only in WordPress + WooCommerce when I try to go from checkout to payments. I haven’t changed any configuration in OpenLiteSpeed. When I switch to Apache + Nginx and PHP-FPM, everything starts working fine.

There is no any PHP errors.

 

[zEitEr]

Hello,

The 502 error (bad gateway error) in OpenLiteSpeed most likely indicates that an upstream server (i.e. PHP-FPM) sends an incorrect response to a server serving as a gateway or proxy (i.e. OpenLiteSpeed).

So you might check error logs from OpenLiteSpeed, and/or enable debug mode in WordPress + WooCommerce

p.s. Is Mod Security installed/enabled?