The test injects an exception here [1] that cause the stack trace.
[1] https://github.com/openstack/nova/blob/ec52963d1f54e4d5495acbd56b9df242dd65f71a/nova/tests/functional/notification_sample_tests/test_instance.py#L1771-L1774
The test injects an exception here [1] that cause the stack trace.
[1] https:/ /github. com/openstack/ nova/blob/ ec52963d1f54e4d 5495acbd56b9df2 42dd65f71a/ nova/tests/ functional/ notification_ sample_ tests/test_ instance. py#L1771- L1774