Flask callback vk bot

i setuped vk_api package(pip install --user vk_api) and now I always get an error i don't know what making

Traceback (most recent call last):
  File "/home/Valery663/mysite/", line 4, in <module>
    from flask import Flask,request
  File "/usr/local/lib/python3.6/dist-packages/flask/", line 17, in <module>
    from werkzeug.exceptions import abort
  File "/usr/local/lib/python3.6/dist-packages/werkzeug/", line 152, in <module>
  File "/usr/local/lib/python3.6/dist-packages/werkzeug/", line 67, in <module>
    from werkzeug._internal import _get_environ
  File "/usr/local/lib/python3.6/dist-packages/werkzeug/", line 11, in <module>
    import re
  File "/usr/lib/python3.6/", line 142, in <module>
    class RegexFlag(enum.IntFlag):
AttributeError: module 'enum' has no attribute 'IntFlag'

[edit by admin: formatting]

Do you have a file in your source code called, or a directory called enum? If so, you should rename it -- I think what's happening is that one of your files is overriding the system enum package.