Error using == (line 30) Invalid types for comparison?

I am using builtin example of matlab on my dataset. when i run the test section it gives me error.

code:

fprintf('%s - Classifying test frames\n', datestr(toc/86400,'HH:MM:SS'))
% Gather the test frames into the memory
testFramesTall = tall(transform(testDSTrans, @helperModClassReadFrame));
rxTestFrames = gather(testFramesTall);
rxTestFrames = cat(4, rxTestFrames{:});

% Gather the test labels into the memory
testLabelsTall = tall(transform(testDSTrans, @helperModClassReadLabel));
rxTestLabels = gather(testLabelsTall);

rxTestPred = classify(trainedNet,rxTestFrames);
testAccuracy = mean(rxTestPred == rxTestLabels);
disp("Test accuracy: " + testAccuracy*100 + "%")

Answer 1

[Walter Roberson]

rxTestLabels = categorical(gather(testLabelsTall));