Leapp fails with a mount error

Issue

• The following errors can be seen during the reboot step:

  ~~~
  upgrade[679]: CalledProcessError: Command ['/bin/mount', '-a'] failed with exit code 32.
  :
  upgrade[679]: Container sysroot failed with error code 1.
  upgrade[679]: writing logs to disk and rebooting
  upgrade[679]: /bin/upgrade: line 19: /sysroot/var/tmp/system-upgrade.state: Read-only file system
  systemd[1]: upgrade.service: Main process exited, code=exited, status=1/FAILURE
  ~~~
  

  Or

  ~~~
  2024-03-12 14:09:48.818 DEBUG    PID: 397 leapp.workflow.InitRamStart.remove_upgrade_boot_entry: External command has started: ['/bin/mount', '-a']
  2024-03-12 14:09:48.827 DEBUG    PID: 397 leapp.workflow.InitRamStart.remove_upgrade_boot_entry: mount: ext4: mount point does not exist.
  2024-03-12 14:09:48.831 DEBUG    PID: 397 leapp.workflow.InitRamStart.remove_upgrade_boot_entry: Command ['/bin/mount', '-a'] failed with exit code 32.
  ~~~