This error message indicates that there are changes staged in the index for the file <filename>. This means that the file has been modified and the changes have been added to the Git staging area, but not yet committed.
If you want to keep the changes and remove the file from the staging area, you can use the
--cached option with the
git rm command:
git rm --cached <filename>
This will remove the file from the staging area but keep it in your local working directory.
If you want to discard the changes and remove the file from both the staging area and the local working directory, you can use the
git rm -f <filename>
This will force the removal of the file and discard any changes made to it.
After removing the file, you can commit your changes using the
git commit command.