Error using NBoot in perfcurve

Hello, I am trying to create an error bar in perfcurve using "NBoot'. But it kept poping up this error.

Warning: One of the classes is not present in at least one subsample. You may

get NaN confidence bounds.

Unable to perform assignment because the left and right sides have a different

number of elements.

Error in BIOE5020_hW2_p3 (line 99)

[X,Y,T,AUC(6),OPTROCPT] = perfcurve(Class,score(:,1),0,'NBoot',1000);

[A] = [Hematocrit,Viscosity,MPAVortivity,RPAVorticity,Helicity];

% Perform PCA on[A] = [U][S][V]' =[rotation][stretch][rotation]
[coeff, score ,latent] = pca(A)
figure
[X,Y,T,AUC(6),OPTROCPT] = perfcurve(Class,score(:,1),0,'NBoot',1000);
c = categorical(Header2);
bar(c,AUC)
title('Predictive Area Under Curve from ROC')