RebarContainer.ByCurve Warning/Not Working

Hey, I have made a fully working rebar script for a Revit project, of which I have now tried to implement in another project. The problem here is that two of my RebarContainer nodes show me a warning I’ve never seen before, see pics below. Does anyone know how to solve this? Would be greatly appreciated. PS - these warnings do not pop up in the project I designed the script for, so there should be no initial problems with the script.