Hi @faarukh,
If the host has indeed fixed the initial issue of the MySQL server, I did notice that you are on a LiteSpeed server. There have been cases in the past, where LiteSpeed server will kill PHP processes without warning and without error messages. I think this may be what is happening on your site.
You should be able to prevent this behavior by adding one of the following codes to the .htaccess
file that is located in the root of your site.
# BEGIN litespeed noabort
<IfModule rewrite_module>
RewriteEngine On
RewriteRule .* - [E=noabort:1]
</IfModule>
# END litespeed noabort
In some cases, depending on the host’s configuration, the above code may not help. An alternate method which may work is this:
# BEGIN litespeed noabort
<IfModule Litespeed>
RewriteEngine On
RewriteRule .* - [E=noabort:1]
</IfModule>
# END litespeed noabort
OR
# BEGIN litespeed noabort
SetEnv noabort 1
# END litespeed noabort
We have a bit more information on this in this page in our docs: https://www.wordfence.com/help/advanced/system-requirements/litespeed/`
Thanks again,
Peter.