Update chain.py

chain.py

@@ -50,7 +50,8 @@ def create_question_answering_chain(retriever):
     # Initialize the OpenAI language model with specified temperature, model name, and API key.
     model = "meta-llama/Llama-2-7b-chat-hf"
     
-    tokenizer = AutoTokenizer.from_pretrained(model)
+    access_token = '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'
+    tokenizer = AutoTokenizer.from_pretrained(model, token=access_token)
     
     pipeline = transformers.pipeline(
         "text-generation", #task
@@ -63,7 +64,7 @@ def create_question_answering_chain(retriever):
         do_sample=True,
         top_k=10,
         num_return_sequences=1,
-        eos_token_id=tokenizer.eos_token_id
+        eos_token_id=tokenizer.eos_token_id,
     )
     
     llm = HuggingFacePipeline(pipeline = pipeline, model_kwargs = {'temperature':0})