项目启动报错 ImportError: cannot import name 'ContextVar'

[Bill-zzy]

使用 Python3.6.8版本

修改了wsgidav版本
修改了werkzeug版本
也改过
'http_authenticator': {
'HTTPAuthenticator':NeedAuthController(app),
},
启动pyspider依然报这个错，麻烦帮我看看是什么问题呢？

还有就是，使用python -m pip install werkzeug==0.16.0 安装werkzeug时报错

ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.

flask 2.0.0 requires Werkzeug>=2.0, but you have werkzeug 0.16.0 which is incompatible.

[lifelikeaboat]

不能装flask 2.0.0 安装flask==1.0.2 然后再重装werkzeug

[bushnerd]

不能装flask 2.0.0 安装flask==1.0.2 然后再重装werkzeug

成功！

[Chen Lungang]

成功, 好人一生平安

[Chen Lungang]

成功, 好人一生平安