Update app.py

Removed huggingfacehub_api_token= huggingfacehub_api_token ,

app.py

@@ -75,7 +75,7 @@ from langchain.chains import ConversationalRetrievalChain
 
 import os
 
-huggingfacehub_api_token = os.getenv("HF_API_TOKEN")
+#huggingfacehub_api_token = os.getenv("HF_API_TOKEN")
 
 def get_pdf_text(pdf_docs):
     text=""
@@ -129,7 +129,7 @@ def get_vector_store(text_chunks):
 
 from langchain import HuggingFaceHub
 
-llm=HuggingFaceHub(huggingfacehub_api_token= huggingfacehub_api_token ,repo_id="mistralai/Mixtral-8x7B-Instruct-v0.1")
+llm=HuggingFaceHub(repo_id="mistralai/Mixtral-8x7B-Instruct-v0.1")
 
 # from langchain.chains import RetrievalQA
 # # retriever = RetrievalQA.from_chain_type(llm=llm, chain_type="stuff", retriever=docsearch.as_retriever())