Pycharm Shows django as Unresolved Browse

You are running pycharm locally, referring to a folder on Vagrant (VirtualBox).
If you open a file on pycharm, for example,

 from django.conf import settings

I have encountered a problem where a red line is drawn under the settings and "unresolved references" is displayed, and I would like you to tell me how to solve this problem.

Actual Operating System: Windows 10 VirtualBox OS: Ubuntu 16.04
Python: 3.7
Remote Python: 3.5.2
The .box file was used by other development members.

Configuration → Project → Interpreter
If you look at the , Django appears to be installed.

It seems like it only appears on my PC, and other members have seen it, but it hasn't been resolved yet.