Git push: Missing or invalid credentials. fatal: Authentication failed for ‘https://github.com/username/repo.git’

Question

You are trying to use git from a terminal in vscode.
The problem comes from the authentication handler of vscode.
To solve the problem:

You have to re-open the terminal to make it work.

As of March 2022, the menus have changed a bit. Here’s an illustration of how to access them:
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