### Apache Airflow version 3.2.0b1 ### If "Other Airflow 3 version" selected, which one? _No response_ ### What happened? <img width="1720" height="846" alt="Image" src="https://github.com/user-attachments/assets/b067d9c6-9ecd-423d-9b4b-5351e1f21f31" /> ### What you think should happen instead? _No response_ ### How to reproduce Steps to repro: 1. Run airflow instance with command `breeze start-airflow --executor CeleryExecutor --backend MySQL --load-example-dags` 2. Make some dagruns, upgrade to 3.2.0b1 3. Downgrade back to 3.1.8 with command `airflow db downgrade` 4. Notice error while restoring deadline ### Operating System Linux ### Versions of Apache Airflow Providers _No response_ ### Deployment Other ### Deployment details _No response_ ### Anything else? _No response_ ### Are you willing to submit PR? - [ ] Yes I am willing to submit a PR! ### Code of Conduct - [x] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
Apache Airflow version
3.2.0b1
If "Other Airflow 3 version" selected, which one?
No response
What happened?
What you think should happen instead?
No response
How to reproduce
Steps to repro:
breeze start-airflow --executor CeleryExecutor --backend MySQL --load-example-dagsairflow db downgradeOperating System
Linux
Versions of Apache Airflow Providers
No response
Deployment
Other
Deployment details
No response
Anything else?
No response
Are you willing to submit PR?
Code of Conduct