Hey,
I'm trying to get the sentiment scores of reddit comments via Naive Bayes but i'm getting an error at the "Apply Model" operator. I hope someone can tell which step is causing the error.
Error:

Process: (I have a "Tokenize" Operator inside the "Process Documents from Data" Operators)

Input Data (After "Select Attributes"):


Train Data Output after "Naive Bayes" Operator: (Those numbers are shown in the error..)

Test Data Output after "Process Documents from Data" Operator:

Thanks a lot in advance!