NullReferenceException when create/search user/group

  • Updated 
The stacktrace are:
[NullReferenceException: Object reference not set to an instance of an object.]
   EPiServer.UI.Edit.UserMembership.OnLoad(EventArgs e)
   System.Web.UI.Control.LoadRecursive()
[NullReferenceException: Object reference not set to an instance of an object.] 
 EPiServer.UI.Admin.SearchUsers.OnLoad(EventArgs e)  
 System.Web.UI.Control.LoadRecursive()
[NullReferenceException: Object reference not set to an instance of an object.] 
  EPiServer.UI.Admin.AdminGroup.OnLoad(EventArgs e) 
  EPiServer.UI.Admin.AdminGroup.OnLoad(EventArgs e)
Remove EPiServer.Cms.UI.AspNetIdentity package completely and all the code that are using it's namespace