fmz_extend_api_demo搭建问题请教

今天尝试了官方给的fmz_extend_api_demo，结果发现最后运行python app.py的时候报错，如下： /usr/lib/python2.7/site-packages/flask_sqlalchemy/init.py:794: 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. 'SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and ’ Traceback (most recent call last): File “app.py”, line 152, in <module> db.create_all() File “/usr/lib/python2.7/site-packages/flask_sqlalchemy/init.py”, line 963, in create_all self._execute_for_all_tables(app, bind, ‘create_all’) File “/usr/lib/python2.7/site-packages/flask_sqlalchemy/init.py”, line 955, in _execute_for_all_tables op(bind=self.get_engine(app, bind), **extra) File “/usr/lib/python2.7/site-packages/flask_sqlalchemy/init.py”, line 896, in get_engine return connector.get_engine() File “/usr/lib/python2.7/site-packages/flask_sqlalchemy/init.py”, line 556, in get_engine self._sa.apply_driver_hacks(self._app, info, options) File “/usr/lib/python2.7/site-packages/flask_sqlalchemy/init.py”, line 861, in apply_driver_hacks info.database = os.path.join(app.root_path, info.database) AttributeError: can’t set attribute 麻烦大佬们指点一下，谢谢！