[mice A] rf - bug from random forest

[okcze]

Method: rf
Performance: 5/10
Test logs: link
Task: 190403

INFO [23:47:01.398] Applying learner 'removeconstants_before.collapsefactors.imput_mice_A.removeconstants_after.encodeimpact.classif.glmnet' on task 'Task 190403: regime_alimentaire (Supervised Classification)' (iter 2/5)

Error in randomForest.default(x = xobs, y = yobs, ntree = 1, ...) :
Can't have empty classes in y.

Some info about bug: link