ILG - Server Error when selecting Medical in Enroll Now

Hi.  I am testing out some rehire rules in preprod and when I changed my rehire ee back to active and go to readded their enrollments using the Admin QE I get a server when selecting Medical from the Enroll Now section.  Please see server error in screen shot attached.  Let me know when this is resolved this way I can continue testing.  Thank you!

CC:  Kiyo Takahashi Cindy Wibbing