RyanSiu1995 opened a new issue #8755: URL: https://github.com/apache/airflow/issues/8755
**Apache Airflow version**: 1.10.10 **Kubernetes version (if you are using kubernetes)** (use `kubectl version`): **Environment**: Debian with pip install airflow **What happened**: I have some missing DAGs from the source code and it has the record in the database. When I upgrade to v1.10.10, those DAGs don't have the description field, which is None by default, so the change on this PR, #7457, will return an error about applying `len` function to None type. **What you expected to happen**: It should not have any error during the rendering. **How to reproduce it**: Remove a registered DAG from the source code. And the error will pop up **Anything else we need to know**: Nope ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
