ModuleNotFoundError: No module named 'tool.contrib'错误

When the flask is deployed on the server: ModuleNotFoundError: No module named 'werkzeug.contrib error.

1. Reason

Werkzeug has been removed in version 1.0 and abovefrom werkzeug.contrib.fixers import ProxyFix

2. Solutions

from werkzeug.contrib.fixers import ProxyFix

replace with

from werkzeug.middleware.proxy_fix import ProxyFix

can be solved