Family Pre-Registration

Error Loading Block: Family Pre-Registration Show Details

Value cannot be null. Parameter name: type

   at System.Activator.CreateInstance(Type type, Boolean nonPublic)
   at System.Activator.CreateInstance(Type type)
   at Rock.Web.UI.RockPage.OnInit(EventArgs e) in C:\Github\Rock-1-15-2\Rock\Web\UI\RockPage.cs:line 1316