Warning: require(lib/class.MainGame.php): failed to open stream: No such file or directory in /var/www/html/liege/index.php on line 38

Fatal error: require(): Failed opening required 'lib/class.MainGame.php' (include_path='.:/usr/share/php:/usr/share/pear') in /var/www/html/liege/index.php on line 38