Starting Airflow webserver fails with sqlalchemy.exc.NoInspectionAvailable: No inspection system is available

Just hit this myself. its an issue with SQLAlchemy dependency

to fix I did the following:

pip3 uninstall SQLAlchemy
pip3 install SQLAlchemy==1.3.15

https://github.com/apache/airflow/issues/8211

Including the instruction pip install SQLAlchemy==1.3.15 in the Dockerfile and rebuilding the image has solved the issue. Thanks a lot @Java Guy!