Nnvm issue when trying to convert pytorch conv2d to nnvm conv2d

Questions
1

nnvm._base.NNVMError: Required parameter channels of int is not presented, in operator conv2d(name="", kernel_size="(5, 5)", strides="(1, 1)", out_layout=“NCHW”)

2

NNVM is now deprecated. Please consider using Relay instead of NNVM as it gets the latest updates.