The image below shows a 403 error which means means credentials errors or forbidden (you don’t have permission to push).

Solution-1

Step-1: Check if you are pushing the code to your repository

git remote -v

Step-2: If it is not your repository, open a new repository in your GitHub

Step-3: Copy your repository link

Step-4: Go to the terminal and write the following command:

git remote set-url origin your-repo-link

After the entering command, check if the git repository url changed. Write git remote -v on your terminal.

Step-5: Then, run these commands one by one

git branch -M main

git push -u origin main

Solution-2

Step-1: Go to your Start tab on windows and search for Credential Manager.

Step-2: Click on the Credential Manager and then click on Windows Credential

Step-3: Below, Generic Credentials you will see git:https://github.com. Remove it.

Step-4 Follow the steps in this blog
https://dev.to/shafia/support-for-password-authentication-was-removed-please-use-a-personal-access-token-instead-4nbk