Each time the database is loaded, there's a warning message which pops up as shown below
site-packages/flask_sqlalchemy/__init__.py:872: FSADeprecationWarning: SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and will be disabled by default in the future. Set it to True or False to suppress this warning.
This config should be set to False to disable modifications tracking and this should be able to stop this warning from showing up.