When I try to running survival randomforest model in mlr3 using codes as below:
data(veteran)
veteran.xgb <- veteran[, !(names(veteran) %in% c("celltype"))]
set.seed(1369)
train = sample(nrow(veteran.xgb), 0.5 * nrow(veteran.xgb))
test = setdiff(seq(nrow(veteran.xgb)), train)
task = TaskSurv$new("RFSCRC_VET", backend = veteran.xgb, time = "time", event = "trt")
learn = lrn("surv.rfsrc")
learn$train(task, row_ids = train)
And the errors happened, Error: pv$codes %??% -1L, and suggests that there is no %??% in R. Was it a bug?