convert2rhel fails with python traceback error "OSError: [Errno 8] Exec format error".

Issue

• convert2rhel fails with python traceback error.

  ERROR - (ERROR) REMOVE_SPECIAL_PACKAGES::UNEXPECTED_ERROR - Unhandled exception caught
  Description: Unhandled exception was caught: [Errno 8] Exec format error
  Please file a bug at https://issues.redhat.com/ to have this fixed or a specific error message added.
  Traceback: Traceback (most recent call last):
    File "/usr/lib/python2.7/site-packages/convert2rhel/actions/__init__.py", line 573, in run
   action.run()
    File "/usr/lib/python2.7/site-packages/convert2rhel/actions/pre_ponr_changes/handle_packages.py", line 127, in run
    backup_control.push(RestorablePackage(pkgs=pkghandler.get_pkg_nevras(all_pkgs), reposdir=backedup_reposdir))
    File "/usr/lib/python2.7/site-packages/convert2rhel/backup/__init__.py", line 80, in push
  restorable.enable()
    File "/usr/lib/python2.7/site-packages/convert2rhel/backup/packages.py", line 112, in enable
  reposdir=self.reposdir,
    File "/usr/lib/python2.7/site-packages/convert2rhel/utils/__init__.py", line 671, in download_pkg
  output, ret_code = run_cmd_in_pty(cmd, print_output=False)
    File "/usr/lib/python2.7/site-packages/convert2rhel/utils/__init__.py", line 415, in run_cmd_in_pty
  dimensions=(1, columns),
    File "/usr/lib/python2.7/site-packages/convert2rhel/utils/__init__.py", line 472, in __init__
  super(PexpectSpawnWithDimensions, self).__init__(*args, **kwargs)
    File "/usr/lib/python2.7/site-packages/pexpect/pty_spawn.py", line 198, in __init__
  self._spawn(command, args, preexec_fn, dimensions)
    File "/usr/lib/python2.7/site-packages/pexpect/pty_spawn.py", line 296, in _spawn
  cwd=self.cwd, **kwargs)
    File "/usr/lib/python2.7/site-packages/pexpect/pty_spawn.py", line 307, in _spawnpty
  return ptyprocess.PtyProcess.spawn(args, **kwargs)
    File "/usr/lib/python2.7/site-packages/ptyprocess/ptyprocess.py", line 323, in spawn
  raise exception
   OSError: [Errno 8] Exec format error