Leapp: No such file or directory: '/var/lib/leapp/el<version>userspace/artifacts/vmlinuz-upgrade.x86_64'

Issue

• The command leapp preupgrade doesn't show any inhibitor, but leapp upgrade fails with an error similar to the following:

  ==> Processing phase `InterimPreparation`
  ====> * efi_interim_fix
          Adjust EFI boot entry for first reboot
  ====> * upgrade_initramfs_generator
          Creates the upgrade initramfs
  Process Process-361:
  Traceback (most recent call last):
    File "/usr/lib64/python3.6/multiprocessing/process.py", line 258, in _bootstrap
      self.run()
    File "/usr/lib64/python3.6/multiprocessing/process.py", line 93, in run
      self._target(*self._args, **self._kwargs)
    File "/usr/lib/python3.6/site-packages/leapp/repository/actor_definition.py", line 72, in _do_run
      actor_instance.run(*args, **kwargs)
    File "/usr/lib/python3.6/site-packages/leapp/actors/__init__.py", line 289, in run
      self.process(*args)
    File "/etc/leapp/repos.d/system_upgrade/common/actors/initramfs/upgradeinitramfsgenerator/actor.py", line 40,     in process
      upgradeinitramfsgenerator.process()
    File "/etc/leapp/repos.d/system_upgrade/common/actors/initramfs/upgradeinitramfsgenerator/libraries    /upgradeinitramfsgenerator.py", line 209, in process
      generate_initram_disk(context)
    File "/etc/leapp/repos.d/system_upgrade/common/actors/initramfs/upgradeinitramfsgenerator/libraries    /upgradeinitramfsgenerator.py", line 182, in generate_initram_disk
      copy_boot_files(context)
    File "/etc/leapp/repos.d/system_upgrade/common/actors/initramfs/upgradeinitramfsgenerator/libraries    /upgradeinitramfsgenerator.py", line 198, in copy_boot_files
      context.copy_from(os.path.join('/artifacts', kernel), content.kernel_path)
    File "/etc/leapp/repos.d/system_upgrade/common/libraries/mounting.py", line 244, in copy_from
      shutil.copy2(self.full_path(src), dst)
    File "/usr/lib64/python3.6/shutil.py", line 263, in copy2
      copyfile(src, dst, follow_symlinks=follow_symlinks)
    File "/usr/lib64/python3.6/shutil.py", line 120, in copyfile
      with open(src, 'rb') as fsrc:
  FileNotFoundError: [Errno 2] No such file or directory: '/var/lib/leapp/el9userspace/artifacts/vmlinuz-upgrade.x86_64'
  
  
  ============================================================================================================
  Actor upgrade_initramfs_generator unexpectedly terminated with exit code: 1 - Please check the above details
  ============================================================================================================