Errors are reported as follows:

remote: Support for password authentication was removed on August 13, 2021. Please use a personal access token instead.
remote: Please see https://github.blog/2020-12-15-token-authentication-requirements-for-git-operations/ for more information.

reason:

GitHub will enable token token token to replace password from August 13, 2021

Generate your own token

Note: be sure to save the generated token, because you can’t see it again after refreshing the page

Just paste the saved token where you enter the password as before