error 504 in post edit

Check the htaccess file is in place or not and increase the memory limit and then try.

Hi,

504 Gateway Timeout error is commonly found in WordPres + NGINX Web server combination. From the WordPress side, you can either increase the memory or check for the plugin conflict.

Since, plugin conflict has not worked, you should contact your web host for this. https://www.checkupdown.com/status/E504.html

Following are some tweaks you can make in php.ini file to fix it. (all other tweaks need to be made at Web Host).

https://www.queryadmin.com/933/nginx-504-gateway-timeout/

Thanks,