Thanks @ptrblck.  It is showing RuntimeError: Given groups=1, weight of size 64 3 7 7, expected input[16, 4, 224, 224] to have 3 channels, but got 4 channels instead
I have changed the convolution layer as
model.conv0 = nn.Conv2d(4, 64, kernel_size=(7, 7), stride=(2, 2), padding=(3, 3), bias=False)

But When I print the model, it is showing
(conv0): Conv2d(3, 64, kernel_size=(7, 7), stride=(2, 2), padding=(3, 3), bias=False)