调试报错 raise RuntimeError(unbound_message) from None RuntimeError: Working outsi

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db.create_all()
( C) k! V+ U. gTraceback (most recent call last):
  File "F:\Program Files\JetBrains\PyCharm Community Edition 2023.2.1\plugins\python-ce\helpers\pydev\pydevconsole.py", line 364, in runcode
. D: n1 W/ [; f    coro = func()
           ^^^^^^
* {- p# y" u5 t; v' S- Q$ m  File "<input>", line 1, in <module>
  File "G:\Users\longrui\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask_sqlalchemy\extension.py", line 900, in create_all
& V0 i+ ~' w) m$ a- ~- z    self._call_for_binds(bind_key, "create_all")
  File "G:\Users\longrui\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask_sqlalchemy\extension.py", line 871, in _call_for_binds
- J( Q0 Y" ]  E  @    engine = self.engines[key]
% S( b$ n1 E$ F4 b, m             ^^^^^^^^^^^^
* z$ w7 q0 T2 S" Q$ b# D0 q/ ]' Z2 U  File "G:\Users\longrui\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask_sqlalchemy\extension.py", line 687, in engines
    app = current_app._get_current_object()  # type: ignore[attr-defined]
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "G:\Users\longrui\AppData\Local\Programs\Python\Python311\Lib\site-packages\werkzeug\local.py", line 519, in _get_current_object
* A4 C; {1 c, L6 B. e    raise RuntimeError(unbound_message) from None
RuntimeError: Working outside of application context.
This typically means that you attempted to use functionality that needed
the current application. To solve this, set up an application context
with app.app_context(). See the documentation for more information.