我得到的确切错误是：
flask.cli.NoAppException: While importing "application", an ImportError was raised:Traceback (most recent call last):
File "/home/harshit/.local/lib/python3.6/site-packages/flask/cli.py", line 240, in locate_app
__import__(module_name)
File "/home/harshit/Documents/project1/application.py", line 18, in <module>
Session(app)
File "/home/harshit/.local/lib/python3.6/site-packages/flask_session/__init__.py", line 54, in __init__
self.init_app(app)
File "/home/harshit/.local/lib/python3.6/site-packages/flask_session/__init__.py", line 61, in init_app
app.session_interface = self._get_interface(app)
File "/home/harshit/.local/lib/python3.6/site-packages/flask_session/__init__.py", line 93, in _get_interface
config['SESSION_USE_SIGNER'], config['SESSION_PERMANENT'])
File "/home/harshit/.local/lib/python3.6/site-packages/flask_session/sessions.py", line 313, in __init__
from werkzeug.contrib.cache import FileSystemCache
ModuleNotFoundError: No module named 'werkzeug.contrib'
我正在尝试从 Flask 导入会话
Werkzeug 1.0.0 删除了已弃用的代码，包括所有werkzeug.contrib。您应该为新项目使用替代库。werkzeug.contrib.session被提取到安全cookie https://pypi.org/project/secure-cookie/.
如果您正在使用的现有项目需要来自contrib，您需要降级到 Werkzeug
pip3 install Werkzeug<1
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