Mediawiki/Common Problems
From r00tedvw.com wiki
- 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 which is generally at /var/www/%mediawiki directory%/images/
sudo chown root:www-data images sudo chmod 775 images