As of the 2/25/2020 update, Online Course Request and Service Learning Entry are no longer working if the Parent or Student Portal Group do not have permission to the CON - Emergency Contact table.
Programming is working on a fix now.
The work around is to give the Parent or Student Portal Group "Read" permissions to the CON - Emergency Contact table.
This issue was fixed in the update released 3/4/2020.
Adding CON read permissions to our students fixed this issue for us as well. Thank you for the post!