Call to a member function deleteSingleDate() on null
2021/10/13 13:00:51 [error] 518654#518654: *112697491 FastCGI sent in stderr: "PHP message: Error: Call to a member function deleteSingleDate() on null
in /srv/studip_svn/4.6/lib/raumzeit/MetaDate.class.php:355
Stack trace:
#0 /srv/studip_svn/4.6/lib/classes/Seminar.class.php(778): MetaDate->deleteSingleDate('6a31aa44f4ccbcb...', '46725056058c8b1...', 0, 0)
#1 /srv/studip_svn/4.6/lib/classes/Seminar.class.php(787): Seminar->deleteSingleDate('46725056058c8b1...', '6a31aa44f4ccbcb...')
#2 /srv/studip_svn/4.6/app/controllers/course/cancel_dates.php(57): Seminar->cancelSingleDate('46725056058c8b1...', '6a31aa44f4ccbcb...')
#3 /srv/studip_svn/4.6/vendor/trails/trails.php(557): Course_CancelDatesController->store_action()
#4 /srv/studip_svn/4.6/app/controllers/studip_controller.php(110): Trails_Controller->perform('store')
#5 /srv/studip_svn/4.6/vendor/trails/trails.php(154): StudipController->perform('store')
#6 /srv/studip_svn/4.6/vendor/trails/trails.php(121): Trails_Dispatcher->map_uri_to_response('course/cancel_d...')
#7 /srv/studip_svn/4.6/public/dispatch.php(27): Trails_Dis" while reading response header from upstream,
request: "POST /dispatch.php/course/cancel_dates/store?cid=9f2bc8b65689f95edf7f0430623b2b47 HTTP/2.0",
referrer: "https://studip.uni-hannover.de/dispatch.php/course/dates?cid=9f2bc8b65689f95edf7f0430623b2b47"
Studip 4.6-luh