The call to /usr/share/tuleap/src/utils/launch_system_check.php crashes and stop the backend web container. Issue is present since
git #tuleap/stable/04fbb68cec653284090d9ae16365316760bba0c4 where I missed some dependency injections.
The code issue in launch_system_check.php has been spotted by Psalm and a fix for it is already being reviewed (
request #15599).
Anyway, the call to launch_system_check.php should be replaced as launch_system_check.php is now deprecated.