[B]Register-Not Displaying error message when entering string characters on the phone number fields

[UththaraHeshani]

Description: Not Displaying error message when entering string characters on the phone number fields

Steps: 1)Launch the Learn book >Field all phone number field with strings>Click on Registration

Expected Result: Displaying error message when entering string characters on the phone number fields

Actual Result: Not Displaying error message when entering string characters on the phone number fields and student or teacher can register successfully