ValueError: expected 5D input (got 4D input)

[usingcsharp]

Hello,I find you question in 'Torch2CoreML' project,
def _check_input_dim(self, input):
reshape (N,C,H,W) to (N,C,1,H,W)
if input.dim() != 5:
raise ValueError('expected 5D input (got {}D input)'
.format(input.dim()))
But I can't work well, can you help me? Thank you very much!