Check the types of features (categorical or numerical) in the table below are correctly classified.
Some features may have to be handled as the categorical feature even though they are looks like numerical features.
(e.g. Country names may be being replaced to country codes.)
If tha data has such features, change the checked state of the features from "numerical" to "categorical" in the table below.

Finally, set the column of "target" of target variable checked.