Error when connecting a cable from CircuitTermination to CircuitTerminaiton

[HanlinMiao]

Environment

• Nautobot version (Docker tag too if applicable): 1.5.7
• Python version: 3.7.16
• Database platform, version:
• Middleware(s):

Steps to Reproduce

1. Connect a cable from CircuitTermination to CircuitTermination from CircuitDetailPage
2. After creating, nautobot will try to redirect you back to CircuitDetailPage

Expected Behavior

CircuitDetailPage is correctly rendered

Observed Behavior

Attribute Error occurred

[HanlinMiao]

See this comment on CircuitCircuitTerminationSerializer for a possible fix

[slappey-ibkr]

What's the fix here? I'm getting the same error and I'm unable to access the detail view of many circuits. I'm running nautobot v1.5.11 and python v3.10.2. Also, I'm unable to delete cables via api that are connected to circuit terminations. I keep getting "CablePath matching query does not exist".

[alhogan]

This came up again, user accidentally connected two Circuits via Front and Rear ports on a patch panel Device. The corresponding Cable objects can't be deleted from the GUI due to the error @HanlinMiao posted above. We were able to workaround this issue by deleting the cable via the Nautobot Shell.