#3 /srv/studip_svn/4.6/public/plugins_packages/elan-ev/MeetingPlugin/vendor/slim/slim/Sl" while reading response header from upstream, request: "GET /plugins.php/meetingplugin/api/rooms/join/a851748aab8fec0b1e1f6eb67656e362/35168 HTTP/2.0", referrer: "https://studip.uni-hannover.de/plug...