Getting Error in training Using fitcensemble() Function of MATLAB

I am trying to train a classification model using fitcensemble in MATLAB with generic implementation:

Model = fitcensemble(Xtrain,Ytrain);

The feature vector and output has form:

• Xtrain: 80x92184
• Ytrain:80 x 1

The model does not train instead I get this error:

Warning: AdaBoost M2 exits because pseudo-loss from the last hypothesis is not positive.

as shown in the snapshot below:

The model details that I get after the above error message is given below:

What does this error means, and how can i remedy this

[Wabi Demeke]

Y output is double as I can see.

Maybe convert Y=categorical(Y);

[S. Sal]

Just tried, did not work.

Received the same error.