GitHub user ignashkin added a comment to the discussion: Weird error with 
TriggerDagRunOperator with Airflow 2.9.3

In my case Airflow-web and schedule have been updated  to 2.9.3 version. But 
database and workers were 2.8.1.
So the issue has been caused by not appropriate database structure (version)

GitHub link: 
https://github.com/apache/airflow/discussions/41165#discussioncomment-11864054

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