How to run new Koala models?

[MaiJames]

I'm trying to load the new koala-13B-4bit-128g model with the text-generation-webui with the following arguments with no luck:

call python server.py --auto-devices --chat --model koala-13B-4bit-128g --wbits 4 --groupsize 128 --model_type llama

I get this error:

What am I doing wrong?

I've been able to run the 8 bit Koala 13B no problem, my question is about the 4 bit ones.