phpMyAdmin Class ‘PMA_Message’ not found in /usr/share/ phpMyAdmin/libraries/ Error.class.php

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My quesiton was:

I just got this error (no errors in phpMyAdmin for the last 2 years):

PHP Fatal error: Class 'PMA_Message' not found in /usr/share/phpMyAdmin/libraries/Error.class.php on line 24

I tried searching the net and links like

but none solved my issues, and strangely enough - these are only two links which pop up in the first 50 links of google search for this error. So, please shed some light on this.

Btw, the site which is hosted on this server works fine, DB works fine (mysql, login via SSH).

The answer, by Chris Muench, was:

I fixed this issue by restarting apache.

My comment on this answer was:

Thanks, in my case the reload was enough (service httpd reload)

Written by Nikola Brežnjak