Error using trainNetwork (line 154) Unable to perform assignment because the size of the left side is 56-by-1 and the size of the right side is 56-by-2571.

i have a keystroke dataset of 71 features, 56 classes and 2857 records. when training i keep seeing "error during training" i need help.....

%Importing the keystroke data.

filename = "MobileKSD2016.csv";

data = readtable(filename);

head(data)

%Convert the labels in the class column of the table to categorical

data.class = categorical(data.class);

f = figure;

f.Position(3) = 1.5*f.Position(3);

h = histogram(data.class);

xlabel("Class")

ylabel("Frequency")

title("Class Distribution")

%Partition the data into a training partition and a held-out test set. Specify the holdout percentage to be 10%.

cvp = cvpartition(data.class,'Holdout',0.1);

dataTrain = data(training(cvp),:);

dataTest = data(test(cvp),:);

textDataTrain = dataTrain.Pressure;

textDataTest = dataTest.Pressure;

YTrain = dataTrain.class;

YTest = dataTest.class;

XTrain = ([1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]');

inputSize = 71;

outputSize = 180;

numClasses = numel(categories(YTrain));

layers = [ ...

sequenceInputLayer(inputSize)

lstmLayer(outputSize,'OutputMode','sequence')

fullyConnectedLayer(numClasses)

softmaxLayer

classificationLayer]

options = trainingOptions('adam', ...

'GradientThreshold',1, ...

'InitialLearnRate',0.01, ...

'Plots','training-progress', ...

'Verbose',0);

net = trainNetwork(XTrain,YTrain,layers,options);...this line gives the error

YPred = classify(net,YTest);

accuracy = sum(YPred == YTest)/numel(YPred)