[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/class_loader.php on line 160: require(./ext/board3/portal/event/listener.php): failed to open stream: No such file or directory

Fatal error: require(): Failed opening required './ext/board3/portal/event/listener.php' (include_path='.:/usr/lib/php5.4') in /homepages/37/d494374989/htdocs/forum/phpbb/class_loader.php on line 160