Error on Illinois Income Tax Credits Information and Worksheets Schedule 1299-I

Hello, I am getting an error that I can't seem to get beyond in TurboTax Premier Tax Year 2021.

On the form Income Tax Credits Information and Worksheets Schedule (1299-I), I filled in the section called "Instructional Materials and Supplies (Credit Code 5700)(Form IL-1040 filers only)" and input my teacher license number in the field called "Educator License" with my 6-digit license number.

I'm getting an error from TurboTax that says

"Income Tax Credits Info and Worksheets: TP Educator License should only contain digits. If not applicable, enter N/A."

I've tried removing the number and reentering manually, but continue to get this error and can't file without clearing this error