failing to run the kpax2 code

[Chwim]

i am trying to see whether the lineages i am getting when i do my Maximum likelihood phylogenetic analysis are true lineages or sub-lineages within a known lineage. Someone advised me to use kpax2 but this is my first time and i have tried reading broadly on it but the agebra behind it is not easy for me to grasp. i found your tutorial but i am getting that error when i try to mirror the code on my dataset. Would u please shade more light on how i can resolve it?