Mediawiki/Common Problems

Cannot Upload files - Error

Could not create directory "mwstore://local-backend/local-public/3/3c".

change ownership and provide write access to apache2 user, generally www-data, for images directory.

for mediawiki this is generally at /var/www/%mediawiki directory%/images/

i.e

sudo chown root:www-data images
sudo chmod 775 images