I am getting this error message, how to solve?
18.4.2+Branch.master.Sha.9888b477be8d3ec8a832306fc59c34ba6edad108
Message: Cannot set unknown member ‘{http://schemas.microsoft.com/netfx/2009/xaml/activities/presentation}VirtualizedContainerService.HintSize’.
Exception Type: System.Exception
An ExceptionDetail, likely created by IncludeExceptionDetailInFaults=true, whose value is:
System.Exception: Cannot set unknown member ‘{http://schemas.microsoft.com/netfx/2009/xaml/activities/presentation}VirtualizedContainerService.HintSize’.