Running bootstrap.py and getting error.

Trying to get the last few nodes I need over to my satellite 6 node. On the nodes I am running into the following error. Any help appreciated.
[ERROR], [2018-03-06 15:47:38], EXITING: [/usr/bin/yum -y install katello-agent] failed to execute properly.
Loaded plugins: product-id, rhnplugin, security, subscription-manager
This system is receiving updates from Red Hat Subscription Management.
There was an error communicating with RHN.
RHN Satellite or RHN Classic support will be disabled.
Error communicating with server. The message was:

Error Message:
Satellite Certificate has expired
Error Class Code: 3006
Error Class Info: Invalid satellite certificate
Explanation:
An error has occured while processing your request. If this problem
persists please consult the Red Hat Customer Portal Knowledge Base
landing page on common registration Error Class Codes at
https://access.redhat.com/solutions/17036 for a possible resolution.
If you choose to open a support case in the Red Hat Customer Portal,
please be sure to include details of what you were trying to do when
this error occurred and specifics on how to reproduce this problem.

file:///mnt/RHEL/repodata/repomd.xml: [Errno 14] Could not open/read file:///mnt/RHEL/repodata/repomd.xml
Trying other mirror.
Setting up Install Process
No package katello-agent available.
Error: Nothing to do