Gateway Timeout

I installed Hestiacp on OpenVZ vps server

Sometimes the following message appears on my Wordpress blog

Is this a bug in Hestia?
How to solve this

Increase the timeouts in nginx/apache2/php-fpm config…


thank you

i 'm facing this issue . an trying to find the file path that you mentioned but not able to find can you please tell me the path . i’m using ssh