KNN disabled in my classification learner?

Hello every one, I want to train the UNSW-NB15 dataset (with holdout validation) using the KNN classifier, in my classification learner application (Matlab R2018a). However, only SVM and Decision trees and Ensemble classifiers are enabled. Other classifiers such as KNN classifier, Logistic regression classifier, and Discriminant analysis are disabled. Is there anything wrong with my Matlab, or is it related to the data set? Thank you.

[Hashir Abdi]

did you ever figure out the reason why this happened? Am experiencing the exact same thing.

[Abdulla Al Blooshi]

For those who still search for the problem. Make sure that the table containing the data set does not include strings or "words" ..

my data set included MONTH, New/Old words, which I replaced with numeric values. not it works.

hope this helps.