[Plugin: WordPress Event Calendar] Fatel Error – Uncaught exception 'Exception' with messa

Fatal error: Uncaught exception ‘Exception’ with message ‘DateTimeZone::__construct() [datetimezone.–construct]: Unknown or bad timezone (UTC-8)’ in /homepages/30/d119280860/htdocs/aqwearium/wp-content/plugins/wordpress-event-calendar/php/support/dateTimeManager.class.php:189 Stack trace: #0 /homepages/30/d119280860/htdocs/aqwearium/wp-content/plugins/wordpress-event-calendar/php/support/dateTimeManager.class.php(189): DateTimeZone->__construct(‘UTC-8’) #1 /homepages/30/d119280860/htdocs/aqwearium/wp-content/plugins/wordpress-event-calendar/php/controller/handlers/eventHandler.php(120): dateTimeManager->convertToSystemTime(1288861200) #2 /homepages/30/d119280860/htdocs/aqwearium/wp-content/plugins/wordpress-event-calendar/php/controller/adminActions.class.php(41): eventHandler->add() #3 /homepages/30/d119280860/htdocs/aqwearium/wp-content/plugins/wordpress-event-calendar/php/controller/adminActions.class.php(182): adminActions::runSetAction(‘createEvent’) #4 /homepages/30/d119280860 in /homepages/30/d119280860/htdocs/aqwearium/wp-content/plugins/wordpress-event-calendar/php/support/dateTimeManager.class.php on line 189