Git Push Rejected: 'Remote Contains Work' Error Solution

This error message indicates that the Git push command failed because the upstream repository contains changes that you do not have locally. This can happen when someone else has made changes to the same branch and pushed them to the remote repository. To resolve this, you should first pull the changes from the remote repository using the 'git pull' command and then push your changes again. If you are unsure about how to resolve this error, you can refer to the 'Note about fast-forwards' in the Git push documentation for more information.