My accuration zero percent. What's wrong?

Good morning everyone. My accuration 0% what's wrong with it?

This my code. Thank you so much before.

close all
clear all
e = imread('E:\Latihan MATLAB\Project_UAS\Training\huruf-a\2.jpg');
figure, imshow(e);
t = graythresh(e);
imbw_otsu = im2bw(e,t);
figure, imshow(imbw_otsu);
se = strel('disk',1);
citra_close = imclose(e,se);
figure, imshow(citra_close);
imbw_manual = im2bw(citra_close, 115/255);
figure, imshow(imbw_manual);
imbw_manual3 = 1 - imbw_manual;
figure, imshow(imbw_manual3);

traindir = 'Training'; 
testdir = 'Testing'; 
huruflist = dir(traindir);          
huruflist(1) = [];                  
huruflist(1) = [];
huruflist = {huruflist.name}';

train_data = [];
for i=1:size(huruflist,1)
    train_kelas = huruflist{i};
    imglist = dir([traindir '\' train_kelas]);
    imglist(1) = [];
    imglist(1) = [];
    imglist = {imglist.name}';
    
    for j=1:size(imglist,1)
        imgname = imglist{j};
        iminput = imread([traindir '\' train_kelas '\' imgname]);
%         imgray = rgb2gray(iminput);
        t = graythresh(iminput);
        imbw_otsu = im2bw(iminput,t);
        se = strel('disk',1);
        citra_close = imclose(iminput,se);
        imbw_manual = im2bw(citra_close, 115/255);
        imbw_manual3 = 1 - imbw_manual;                         
        
        s = regionprops(imbw_manual3, 'Eccentricity', 'Area', 'Perimeter');
        eccentricity = cat(1, s.Eccentricity);
        area = cat(1, s.Area);
        perimeter = cat(1, s.Perimeter);
        rasio_luaskeliling = area / perimeter;
        
        train_data = [train_data; {train_kelas}, imgname, eccentricity, rasio_luaskeliling];
    end
end

xlswrite('train_features.xlsx', train_data, 1, 'A1');

testlisthuruf = dir(testdir);          
testlisthuruf(1) = [];                 
testlisthuruf(1) = [];
testlisthuruf = {testlisthuruf.name}';

testimgdir = 'Test Images';
if ~exist(testimgdir)
    mkdir(testimgdir);
end

test_data = [];
for i=1:size(testlisthuruf,1)
    imgname = testlisthuruf{i};
    test_class = imgname(1:end-4);          
    iminput = imread([testdir '\' imgname]);
%         imgray = rgb2gray(iminput);
    t = graythresh(iminput);
    imbw_otsu = im2bw(iminput,t);
    se = strel('disk',1);
    citra_close = imclose(iminput,se);
    imbw_manual = im2bw(citra_close, 115/255);
    imbw_manual3 = 1 - imbw_manual;
    
    
    s = regionprops(imbw_manual3, 'Eccentricity', 'Area', 'Perimeter');
        eccentricity = cat(1, s.Eccentricity);
        area = cat(1, s.Area);
        perimeter = cat(1, s.Perimeter);
        rasio_luaskeliling = area / perimeter;
        
        test_data = [test_data; {test_class}, eccentricity, rasio_luaskeliling];
end

[num, raw] = xlsread('train_features.xlsx');
trainX = num(:,:);
trainY = raw(:,1);

testX = cell2mat(test_data(:,2:end));
testY = test_data(:,1);

categories = {'huruf-a';'huruf-e';'huruf-i';'huruf-o';'huruf-u'};
result = cell(size(testY));
numClasses = size(categories,1);

for i=1:numClasses
	G1vAll=(strcmp(trainY,categories(i)));
	models(i) = svmtrain(trainX, G1vAll, 'kernel_function', 'linear');
end

for i=1:size(testX,1)
	for j=1:numClasses
        if(svmclassify(models(j),testX(i,:))) 
            break;
        end
    end
	result(i) = categories(j);
end

accuracy = 0;    
for i=1:size(result,1)
    if (strcmp(result(i),testY(i)))
        accuracy = accuracy + 1;
	end
end

[gr_w gr_h] = size(testY);
accuracy = (accuracy / gr_w)*100;
disp(['Akurasi = ' num2str(accuracy) '%']);    

[darova]

Can you be more specific? What is the problem?