Update app.py

app.py

@@ -8,6 +8,8 @@ from langchain.llms import HuggingFaceHub
 
 from chain import get_new_chain1
 
+api_token = os.environ["HF_TOKEN"]
+
 def get_faiss_store():
     with open("docs.pkl", 'rb') as f:
         faiss_store = pickle.load(f)
@@ -22,7 +24,7 @@ def load_model():
 
     flan_ul = HuggingFaceHub(repo_id="google/flan-ul2", 
                                 model_kwargs={"temperature":0.1, "max_new_tokens":200},
-                                huggingfacehub_api_token="")
+                                huggingfacehub_api_token=api_token)
 
     qa_chain = get_new_chain1(vectorstore, flan_ul, flan_ul, isFlan=True)
     return qa_chain