R: Error in nrow[w] * ncol[w] : non-numeric argument to binary operator, while using neuralnet package

Question

I am using neuralnet package for training a classifier. The training data looks like this:

> head(train_data)
   mvar_12      mvar_40 v10       mvar_1            


        

Answer 1

Do a str(cv_data) and make sure they are all numeric.