unity Cannot perform upm operation: Cannot fetch authorization code. User access token is expired or user is not logged in. [Forbidden]

Ttry to re-login

One way:

1. open your project

2. window > Asset store

3. Goto Asset store via unity

4. Go to my assets

5. You will be redirected to re-login via the browser

6. Enter your email and password via the browser

7. After you click sing in, there will be a pop up to open via unity hub.

8. Select open unity hub

9. Done