fatal: The current branch master has no upstream branch. To push the current branch and set the remote as upstream, use git push --set-upstream heroku master code example

Example 1: $ git push fatal: The current branch favicon has no upstream branch. To push the current branch and set the remote as upstream, use git push --set-upstream origin favicon

git push -u origin --all

Example 2: the current branch has no upstream branch error

git push -u main --all