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The problem is in the last file of the stacktrace (_LaneChangeRelation.py:33) which contains the following line:
None = 0
Since None can't be assigned to in Python this code fails with a SyntaxError.
The reason is that the message definition uses None as the name of a constant which doesn't work in Python: https://gitlab.com/autowarefoundation/autoware.ai/messages/blob/2cb6f9f6bdcfa52b512c53169da696737935a17c/autoware_map_msgs/msg/LaneChangeRelation.msg#L5
Since there is no automatic mangling to avoid the collision with language specific keywords I would suggest to file a ticket in the repo defining the message.
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