Please do the following:

1. Open CreateQuestions.cshtml

2. Scroll down to script section at the bottom of the file

3. Before document.ready statement, add this code:

   $(function () { $("button[type='submit'], input[type='submit']").click(function () { $(".k-widget").removeClass("input-validation-error"); }); });

You could also see the image below to get more understand about it.