Welcome to the forum
I think we need to see your code and some sample data.
A handy way to supply some sample data is the dput() function. In the case of a large dataset something like dput(head(mydata, 100)) should supply the data we need. Just do dput(mydata) where mydata is your data. Copy the output and paste it here.
Not everyone will have a Kagle registration so the sample data with some missing data wil help get a faster answer.