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. 'SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and ' code example

Example: 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.

# just put this line it will solve the issue 
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
# keep helping others :) :)