To send a pull request means to 'fetch' new changes made to the remote repo and merge them with the local repo.
How to Fix error: failed to push some refs to Error in Git Using git pull Let's go over how you can use the commands above. In most cases, the latter fixes the error. We can fix the error: failed to push some refs to error in Git using the git pull origin or git pull -rebase origin commands. How to Fix the error: failed to push some refs to Error in Git We'll be discussing two possible ways of fixing this error in the sections that follow. This is necessary so that you don't override the changes made by others.
So Git is trying to tell you to update the local repo with the current changes in the remote before pushing your own changes. This error mainly occurs when you attempt to push your local changes to GitHub while the local repository (repo) has not yet been updated with any changes made in the remote repo. When collaborating with other developers using Git, you might encounter the error: failed to push some refs to error.