Hi
Several servers are showing this today:

/etc/cron.daily/0yum-daily.cron:

Update notice SLBA-2017:1418-1 (from sl-extras) is broken, or a bad duplicate, skipping.
You should report this problem to the owner of the sl-extras repository.
If you are the owner, consider re-running the same command with --verbose to see the exact data that caused the conflict.
Update notice SLEA-2017:1901-1 (from sl-extras) is broken, or a bad duplicate, skipping.


Cheers
Bill Maidment