when i try that, then error comes again that said expected image is 4dimension, but my data is 3dimension.
expected is [64,1,10,10] but my dataset is [105, 105, 1]
and i still want to use my own dataset. i search how to solve it and some page said the image must unsequeeze before.
and i see, i dont unsequeeze x1 and x2
but when x1 and x1 pass the unsequezeed, the same error comes again like this 
Screen Shot 2020-03-13 at 16.53.141987×374 144 KB