Python 3.8 - ModuleNotFoundError: No module named 'flask._compat'

Python 3.8 报错 No module named 'flask._compat'

C:\Users\name\PycharmProjects\untitled>python manage.py server
Traceback (most recent call last):
  File "manage.py", line 1, in <module>
    from flask_script import Manager, Server
  File "C:\Python38\lib\site-packages\flask_script\__init__.py", line 15, in <module>
    from flask._compat import text_type
ModuleNotFoundError: No module named 'flask._compat'

修改 flask_script/__init__.py 文件

from flask._compat import text_type

--- 修改为：

from flask_script._compat import text_type