Given the following labelled training data,

Hurry, you have win prize. $($SPAM$)$

Get discount code ML$2023($SPAM$)$

Get flat $90\%$ off $($SPAM$)$

Get admission to mtech in data science and engineering to make successful career $($HAM$)$

Natural language processing course in BITS $($HAM$)$

use multinomial native bayes classifier to identify classification of the sentence "Hurry get discount win prize". Identify the issue with classifier and how it can be solved?