Error message returns “null” for a radiogroup

[Ollie-nl]

Product versie / Product version

2.6

Omschrijf het probleem / Describe the bug

As a user, I expect a clear and accessible error message. Now, the error message returns a "null".

More input about this bug: https://github.com/frameless/strapi/issues/643

Stappen om te reproduceren / Steps to reproduce

Leave all radio buttons in a radio group unselected and click on the submit button of the form

Verwacht gedrag / Expected behavior

Show clear description

Screen resolution

unknown

Device

Desktop

OS

MacOS

Browser

Safari