Error coming while using Random Forest using R

Question

I am using a dataset containing mvar_1 as column, having names of one of 5 parties that citizen voted for last year. Other variables are just demographic variab

Answer 1

I had the same problem, but solved it after seeing that I had imported the data frame with comma separators without indicating it.

After importing the table using read.table(data, dec=",") the problem was solved!