In this video

We show more info to the user if the season dates are invalid.

Assignment: Require at least 1 Game Night
  1. Group together the game night controls
  2. Create a new formGroup in the form for game nights
  3. Mark all the checkboxes as invalid if there are no game nights selected
  4. show an error message about selecting at least 1 game night
  5. display all the checkboxes as red if there is no game night selected

I finished! On to the next chapter