Valueerror: the least populated class in y has only 1 member, which is too few. The minimum number of groups for any class cannot be less than 2.
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Value error occurs when there is an error in the value that has been inputted.
Every field has a fixed field length.
As the error says, the number of members is very less.
That is, according to the condition, there should be at least two members.
As the class y has only 1 member, it did not meet the requirement or condition and so it resulted in an error.
This error can be debugged by increasing the number of members in class y to be more than 2.
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