Change HF-TOKEN back to HF_TOKEN

app.py

@@ -16,7 +16,7 @@ def get_vectorstore():
 
 vector_store = get_vectorstore()
 
-llm = HuggingFaceHub(repo_id = "meta-llama/Llama-2-7b-chat-hf",huggingfacehub_api_token=HF-TOKEN, model_kwargs={"temperature":0.5}) #, "max_length":512})
+llm = HuggingFaceHub(repo_id = "meta-llama/Llama-2-7b-chat-hf",huggingfacehub_api_token=HF_TOKEN, model_kwargs={"temperature":0.5}) #, "max_length":512})
 
 qa_chain = RetrievalQA.from_chain_type(llm=llm,
                                        chain_type='stuff',