The most likely reason for this would be that today's date currently falls in between two terms, putting us outside of an active term. In order to commit Rubric grades, the current date will need to fall within an active term. To check your term dates:
  1. Go to Core > Settings > School Information > Years & Terms
  2. Change the school level drop down to the school level of the course that the teacher teaches
  3. Look at begin dates and end dates of the Academic Terms
  4. If today falls in between two terms, click the edit pencil of the term we were just in
  5. Change the End Date to include today
  6. Click Save & Close