Unable to import model in colab

Dear All,
I am trying the huggingface pre-trained library the first time and I am trying to pull this pre-trianed model in colab: ktrapeznikov/biobert_v1.1_pubmed_squad_v2 路 Hugging Face
I am not sure why the runtime error is coming. Can someone please help:
Task: I am basically trying to replicate the question and answering using this model in colab.

code

%rm -rf biobert_v1.1_pubmed-finetuned-squad
!git clone gerardozq/biobert_v1.1_pubmed-finetuned-squad 路 Hugging Face

from transformers import AutoTokenizer, AutoModelForQuestionAnswering

tokenizer = AutoTokenizer.from_pretrained(鈥渂iobert_v1.1_pubmed-finetuned-squad鈥)

model = AutoModelForQuestionAnswering.from_pretrained(鈥渂iobert_v1.1_pubmed-finetuned-squad鈥)

RuntimeError: biobert_v1.1_pubmed-finetuned-squad/pytorch_model.bin is a zip archive (did you mean to use torch.jit.load()?)