Error (Invalid label -10 at position 0) in GEE

Question

I am trying to downscale GRACE data by SmileRandomForest Modelling. Unfortunately, after running the code, I get the following error:

Image (Error) Invalid label -10 at position 0

user_8304172 · Answer

I can't run the code because your table isn't shared. Just a guess, but note that class labels should be consecutive integers starting at zero.