Procedure for Decision Tree Classification

Hello Team,

I’m trying to use Decision Tree-based classification on my raster image.
What I did was, use it through a graph - everything seems fine when I give the same ranges manually through mask manager. But, as I give the same ranges in the Decision tree, though it successfully performs (in just 2 seconds), it gives the following error when I open it.


What’s the procedure for the Decision Tree-based classification actually?