Dialect issue when running the app wsgi.py

[nisban]

running "wsgi.py" , this error popped up :
C:\Users\nisha\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\flask_sqlalchemy\model.py:154: SAWarning: Can't validate argument 'on_delete'; can't locate any SQLAlchemy dialect named 'on'
return sa.Table(*args, **kwargs)