output out of range in deeper network designer

when I use "sequence to label" in deep network designer, my label is all 1*1, but I have an error "unexpected response size: The output layer expects responses with the same sequence length and channel dimenson 1. " It confuses me. There is the code associated with this .

Y=x(:,17);

cellout=cell(685,1);

for i = 1:685

rowData = Y(i, :);

w=rowData';

cellout{i} =w ;

end

cellout=tall(cellout);

write('C',cellout)

out=datastore("C\")

in=datastore("B\")

train1=combine(in,out)

out =

TallDatastore - 属性:

Files: {

'F:\MATLAB\code\C\array_r01_00001_snapshot_0x1.mat';

'F:\MATLAB\code\C\array_r02_00001_snapshot_0x1.mat';

'F:\MATLAB\code\C\array_r03_00001_snapshot_0x1.mat'

... and 9 more

}

ReadSize: 1

FileType: 'mat'

AlternateFileSystemRoots: {}

[jingwen]

I have solved it, by reading Get Started with Deep Network Designer - MATLAB & Simulink (mathworks.com)