我无法为烧瓶运行 app.py 文件

Question

我无法为烧瓶运行 app.py 文件

Traceback (most recent call last):
  File "c:\users\admin\appdata\local\programs\python\python39\lib\site-packages\flask\cli.py", line 256, in locate_app
    __import__(module_name)
  File "C:\Users\admin\ML PYTHON\Fake_news_detection\App\app.py", line 2, in <module>
    from sklearn.externals import joblib
ImportError: cannot import name 'joblib' from 'sklearn.externals' (c:\users\admin\appdata\local\programs\python\python39\lib\site-packages\sklearn\externals\__init__.py)