git pull
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.
fatal: Authentication failed for 'https://github.com/bhaveshpp/stack.git/'
first generate personal access token Profile > Setting > Developer Setting > Personal access token.
Now use this command for save credential
git config credential.helper cache
Now use access token in place of password
Thanks