Why does "leapp preupgrade" fail with "CalledProcessError: Command ['/usr/sbin/xfs_info', '/dev/shm'] failed with exit code 1 " error?

Issue

• The command leapp preupgrade fails with the below error:

    Traceback (most recent call last):
    File "/usr/lib64/python2.7/multiprocessing/process.py", line 258, in _bootstrap
      self.run()
    File "/usr/lib64/python2.7/multiprocessing/process.py", line 114, in run
      self._target(*self._args, **self._kwargs)
    File "/usr/lib/python2.7/site-packages/leapp/repository/actor_definition.py", line 72, in _do_run
      actor_instance.run(*args, **kwargs)
    File "/usr/lib/python2.7/site-packages/leapp/actors/__init__.py", line 290, in run
      self.process(*args)
    File "/usr/share/leapp-repository/repositories/system_upgrade/common/actors/xfsinfoscanner/actor.py", line 23,in process
      scan_xfs()
    File "/usr/share/leapp-        repository/repositories/system_upgrade/common/actors/xfsinfoscanner/libraries/xfsinfoscanner.py", line 45, in sc an_xfs
      mountpoints_ftype0 = list(filter(is_xfs_without_ftype, mountpoints))
    File "/usr/share/leapp-repository/repositories/system_upgrade/common/actors/xfsinfoscanner/libraries/xfsinfoscanner.py", line 24, in is_xfs_without_ftype
      for l in run(['/usr/sbin/xfs_info', '{}'.format(mp)], split=True)['stdout']:
    File "/usr/lib/python2.7/site-packages/leapp/libraries/stdlib/__init__.py", line 188, in run
  result=result
  CalledProcessError: Command ['/usr/sbin/xfs_info', '/dev/shm'] failed with exit code 1.