Looping base class involving proj.web.domaincontext and proj.web.domaincontext

Question

I am trying to create this .web file that returns a successful build, but when I run the project, it returns the "What am I missing" error message above

WHAT I'VE DONE

I changed from UserControl x: Class = "Demo1.Views.frmWardMaster " "to UserControl x: Class =" Demo1.frmWardMaster "in my XAML Views file - this is the folder for my settings, I add a screenshot from the solution browser, any help will be appreciated, thanks!

Update1

even in the Visual Studio forum, an error exists and no solution was found Check this