After accepting a GitHub Classroom assignment, you should get a link to your own repo with the initial code and auto-grading setup.

If everything worked as it should you will see:

• A directory called .github:
  • 
• 3 commits with the following messages:
  • 
• A failing workflow on a list under the Actions tab in your repo:
  • 

If anything from the above list is not true for your repo, you won't be able to get auto-grading for your assignment.

To solve the described problem, just copy the .github directory from this repo into yours.

You can see how it helps in this video.