Satellite-sync fails with "unable to process file /var/rhn-sat-import/channel_families/channel_families.xml" error.

Issue

• Satellite-sync fails with following error while using local media for satellite-sync:

  # satellite-sync --list-channels --mount-point /var/rhn-sat-import
  Red Hat Network Satellite - file-system synchronization
  mp:  /var/rhn-sat-import
  db:  rhnsat/<password>@rhnsat
  Retrieving / parsing channel-families data
  +++ sending log as an email +++
  
  SYNC ERROR: unhandled exception occurred:
  
  (Check logs/email for potentially more detail)
  
  unable to process file /var/rhn-sat-import/channel_families/channel_families.xml