Argument 1 passed to DatafieldEntryModel::findByModel() must be an instance of SimpleORMap, null given, called in lib/classes/InstituteCalendarHelper.class.php on line 215 in lib/models/DatafieldEntryModel.class.php on line 50
#0 lib/classes/InstituteCalendarHelper.class.php(215): DatafieldEntryModel::findByModel()
#1 lib/classes/InstituteCalendarHelper.class.php(333): InstituteCalendarHelper::getInstituteDefaultEventcolors()
#2 app/controllers/admin/courseplanning.php(77): InstituteCalendarHelper::getEvents()
#3 vendor/trails/trails.php(560): Admin_CourseplanningController->index_action()
#4 app/controllers/studip_controller.php(123): Trails_Controller->perform()
#5 vendor/trails/trails.php(154): StudipController->perform()
#6 vendor/trails/trails.php(121): Trails_Dispatcher->map_uri_to_response()
#7 public/dispatch.php(25): Trails_Dispatcher->dispatch()
#8 {main}