Fatal error: Uncaught Error: Call to a member function isPublished() on null in /home/podium/domains/podiumarchitectuur.nl/system/dev/site/modules/class.modAgenda.php:28 Stack trace: #0 /home/podium/domains/podiumarchitectuur.nl/system/dev/site/class.sitemain.php(43): modAgenda->isValid() #1 /home/podium/domains/podiumarchitectuur.nl/system/dev/site/class.sitemain.php(30): SiteMain->_runModule(Object(modAgenda)) #2 /home/podium/domains/podiumarchitectuur.nl/public_html/index.php(11): SiteMain->__construct() #3 {main} thrown in /home/podium/domains/podiumarchitectuur.nl/system/dev/site/modules/class.modAgenda.php on line 28