Something wrong with proc_df

I’m doing the ml1 course. I’m currently on lecture 3.

Yesterday, while using lesson1-rf.ipynb, JN would crash every time I used proc_df (I mentioned this error here, but haven’t received a reply yet)

Today the same thing is happening but on lesson2-rf_interpretation.ipynb :confused: I’m sure the issue is proc_df, but I don’t know how to solve it…