missing decision types

[pecto2020]

I was trying to create a unified lightgbm. I've fit the model using the tidymodels framework. Unfortunately I got this error: Error in ifelse(decision_type %in% c(">=", ">"), ret.second(split_index), : Unknown decision_type. My understing is that there is a problem in decision_type. Checkig the model I've noticed that there are thousands of missing value in the decision type column...Any idea of why decisions are missing and how to solve the issue?