#0 system/modules/pct_articlewrapper/config/config.php(17): __error(2, 'Use of undefine...', '/home/immopart/...', 17, Array)
#1 system/modules/core/library/Contao/Config.php(141): include('/home/immopart/...')
#2 system/modules/core/library/Contao/Config.php(108): Contao\Config->initialize()
#3 system/initialize.php(162): Contao\Config::getInstance()
#4 index.php(16): require('/home/immopart/...')
#5 {main}