Unimplemented type list when trying to write.table

Question

I have the following data.table (data.frame) called output:

> head(output)
        Id                                           Title IsProhibited
1 10000         


        

Answer 1

Another easy solution. Maybe one or more columns are of type list, so we need convert them to "character" or data frame. So there are two easy solutions

1. Convert each column "as.character" using--

   df$col1 = as.character(df$col1)

   df$col2 = as.character(df$col2)

   .......and so on

2. The best one convert df in to a "matrix"

   df = as.matrix(df)

now write df into csv. Works for me.