PyTorch BetterTransformer issue with coremltool converting
Hi,I convert a PyTorch transformer BERT model with coremltool into a.mlpackagemodel and deploy it to my iOS device. This works well so far.When I try to optimize the PyTorch model withBetterTransformer.transformbefore, the conversion process to the.mlpackagemodel fails with the following error message:PyTorch convert function for op '_nested_tensor_from_mask' not implemented.Has anyone had any experience with this so far?Many greetings!