Please use step_impute_knn()
instead.
Usage
step_knnimpute(
recipe,
...,
role = NA,
trained = FALSE,
neighbors = 5,
impute_with = imp_vars(all_predictors()),
options = list(nthread = 1, eps = 1e-08),
ref_data = NULL,
columns = NULL,
skip = FALSE,
id = rand_id("impute_knn")
)