Error: Command failed: git push heroku HEAD:refs/heads/main --force fatal: 'heroku' does not appear to be a git repository fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists.

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v2, actions/setup-node@v2, akhileshns/heroku-deploy@v3.12.12. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.