Skuid import in lightning. What needs to change?

I use the Skuid Import wizard to import data into a couple of objects. In lightning I receive this error:- “Page doesn’t exist - Enter a valid URL and try again”

The Redirect to URL is:-


apex/skuid__Import?obj=Cut_List_Line__c&retURL=%2F{{$Model.CutList.data.0.Id}}&Cut_List__c={{$Model.CutList.data.0.Id}}&Milestone1_Project__cId={{$Model.Project.data.0.Id}}

It probably requires a minor tweak, but so far I’m unable to find the solution.