IMA Lecture Live Video

Fatal error: Uncaught exception 'PropelException' with message 'Unknown column "discovery_event_id" on model, alias or table "Activity"' in /srv/web/Propel/runtime/lib/query/ModelCriteria.php:2096 Stack trace: #0 /srv/web/Propel/runtime/lib/query/ModelCriteria.php(416): ModelCriteria->getColumnFromName('discovery_event...', false) #1 /srv/web/IMA-Propel/build/classes/discovery3/Event.php(116): ModelCriteria->groupBy('discovery_event...') #2 /srv/web/wwwdocs/videos/pws/question.php(17): Event::getCurrentlyStreamingEvent('12') #3 /srv/web/wwwdocs/videos/lind305.php(63): include('/srv/web/wwwdoc...') #4 {main} thrown in /srv/web/Propel/runtime/lib/query/ModelCriteria.php on line 2096