Fatal exception of type MWException
I have spend few hours trying to install the WikiFab extension ,However,the Wikimedia project is very well working but a problem appears when trying to install the new extension .But ,after a while
the problem was solved for me .
Fir-stable I highly recommend for you to enable the Debugging mode .
add this 2 lines in the end of LocalSettings.php
error_reporting( -1 );
ini_set( 'display_errors', 1 );
then the errors will shown up .
The problem was in the permission to rename /tmp/l10n_cache-en.cdb ,so ,In your terminal
$ cd /tmp
$ sudo mv l10n_cache-en.cdb l10n_cache-en.cdb.tmp.697754271
Now refresh the index page !