Fatal error: Uncaught Error: Class "Contao\CoreBundle\Picker\AbstractInsertTagPickerProvider" not found in /home/exklusivbeautysa/public_html/vendor/contao/calendar-bundle/src/Picker/EventPickerProvider.php:27 Stack trace: #0 {main} thrown in /home/exklusivbeautysa/public_html/vendor/contao/calendar-bundle/src/Picker/EventPickerProvider.php on line 27