Duct Splitting

Hello Everyone.

Currently I trying to Splitting duct using Dynamo. Based previous post in this forums (please refer to link in below)
https://forum.dynamobim.com/t/duct-pipe-splitting-with-union/23987/23

But when i will running there are warning like in below

please kindly find my Dyn. file too Duct Splitting.dyn (78.8 KB)

This is my package

Thank you before everyone ^^