Users on my Q&A website are unable to post anything, why?

Question

Whenever a user tries to post a question or an answer he gets the following error:

A Question2Answer database query failed when generating this page.

A full description of the failure is available in the web server's error log file.

And when I checked my server's error log, I saw this

[14-Sep-2016 04:17:44 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/opt/cpanel/ea-php54/root/usr/lib64/php/modules/mcrypt.so' - /opt/cpanel/ea-php54/root/usr/lib64/php/modules/mcrypt.so: cannot open shared object file: No such file or directory in Unknown on line 0

I have no idea how to solve this problem, prior to this everything was fine.

Answer 1

You need to install mcrypt extension on your server. are you using shared hosting or dedicated server.

If you are using Ubuntu server then use below command to install mcrypt

> sudo apt-get install mcrypt php5-mcrypt
> sudo php5enmod mcrypt
> sudo service apache2 restart