While working on one cPanel server we could see below error in error_log file for one client

libMagickWand.so.2: cannot open shared object file

The error log were filled by such errors

reinstalling imagemagick  using command  /scripts/installimagemagick  didnt work as error were still persisting .

So renamed the php,ini file

mv /usr/local/lib/php.ini /usr/local/lib/php.ini-old

Now to regenerate the new php.ini file I had to use command

/scripts/phpini

A new PHP.ini was create with default entries like a newly set server.

Modified the PHP.ini to customize it  as needed

Then had to finish it by rebuilding apache and php using easyapache

/scripts/easyapache

Now all sites work fine without any error 🙂