Hello, Our build is broken currently - Python 3.8.4 released yesterday does not seem to find common language with sqlalchemy. Issue raised with sqlalchemy here: https://github.com/sqlalchemy/sqlalchemy/issues/5458
We are mitigating that by pinning our builds to 3.8.3 with this PR (merging when it passes CI) https://github.com/apache/airflow/pull/9820 So if your build fails with only Python 3.8 errors and with: E TypeError: can't apply this __setattr__ to ModelDeclarativeMeta object It's probably not you. J -- Jarek Potiuk Polidea | Principal Software Engineer M: +48 660 796 129