I'm trying to use the Amelia Function to impute missing data. When I use AmeliaView and upload my data it shows that I have 10 missing variables, which also appear on the Missingness Map. However, when I click "Impute" I am getting the error code "You data has no missing values, Make sure the code for missing data is set to the code for R, which is NA." The missing variables are listed as NA so I'm not sure what the issue is. Any advice?