Train a new model without using the pretrained model weights

I am trying to train a new model using the torchmoji architecture. I am not loading the pre-trained weights in
the code. In torchmoji_transfer function calling the TorchMoji class but not loading the weights. The output is coming out to be nan due to which loss is nan.
Can you please help me understand where am I going wrong. I am pretty new to deep learning. Sorry for the inconvenience in advance.