This can happen when the team does not have a Coach added.  

To add a Coach:
  1. Navigate to Extracurricular > Athletics > Athletic Setup 
  2. Select Manage Coaches.
  3. Search for the team.
  4. Select Add (New).
  5. Search for and select the appropriate Coach.
  6. Select Next.
  7. Select if they are the Head coach, and any other roles they may need.
  8. Select Save & Exit.