Leapp of one compute node fails at "Leapp upgrade (download package)" with no errors

Issue

• Leapp of one compute node fails at "Leapp upgrade (download package)" with no errors beside this:

2023-04-21 18:09:00.554838 | 52540056-e612-daa1-a995-00000000027b |      FATAL | run leapp upgrade (download packages) | overcloud-compute-0 | error={"changed": true, "cmd": "LEAPP_DEVEL_TARGET_RELEASE=8.4 LEAPP_UNSUPPORTED=1 leapp upgrade --debug  --enablerepo rhel-8-for-x86_64-baseos-eus-rpms --enablerepo rhel-8-for-x86_64-appstream-eus-rpms --enablerepo rhel-8-for-x86_64-highavailability-eus-rpms --enablerepo ansible-2.9-for-rhel-8-x86_64-rpms --enablerepo fast-datapath-for-rhel-8-x86_64-rpms
", "delta": "0:00:58.847446", "end": "2023-04-21 18:09:00.128757", "msg": "non-zero return code", "rc": 1, "start": "2023-04-21 18:08:01.281311", "stderr": "2023-04-21 18:08:09.345 INFO     PID: 17120 leapp: Logging has been initialized

• Manually running $ LEAPP_UNSUPPORTED=1 LEAPP_DEVEL_TARGET_RELEASE=8.4 /usr/bin/python2 /bin/leapp upgrade --debug --enablerepo rhel-8-for-x86_64-baseos-eus-rpms --enablerepo rhel-8-for-x86_64-appstream-eus-rpms --enablerepo rhel-8-for-x86_64-highavailability-eus-rpms --enablerepo ansible-2.9-for-rhel-8-x86_64-rpms --enablerepo fast-datapath-for-rhel-8-x86_64-rpms finishes successfully

• Rebooting with the generated initramfs goes to emergency shell.

• In the Last lines of /var/log/leapp/leapp-upgrade.log, we see that the last actor executed was storage_scanner but there're no error messages:

2023-04-21 09:00:57.446 INFO     PID: 700911 leapp.workflow.FactsCollection: Executing actor storage_scanner