Whenever we see this error. Follow the below steps

Step 1: Find out whether the username has added into the GitBash or not

CMD: git config --list

Step 2: Add the username which is similar to github. Go to Github --> Profile --> You will see your name and next something like this basha_fxd

CMD: git config --global user.name "basha_fxd"

Step 3: Run the same code Step 1. You will see that your username has added.

Step 4: Run the below code and it will take your success.

git commit -m 'Updated the Code