Export ONNX error?

I have a pth and index file I downloaded. I am trying to convert these to an onnx file using the webgui. I'm not exactly sure what I need to put in for the RVC model path and the onnx export path so I wonder if those are the mistakes?

The error I have ended up with is AttributeError: 'tuple' object has no attribute 'split'

Any help  would be welcome!