Update app.py

app.py

@@ -9,10 +9,7 @@ from langchain.memory import ConversationBufferMemory
 from langchain.chains import ConversationalRetrievalChain
 from htmlTemplates import css, bot_template, user_template
 from langchain.llms import HuggingFaceHub
-import os
 
-# Fetch the API token from the environment
-huggingface_token = os.getenv("HUGGINGFACEHUB_API_TOKEN")
 
 
 
@@ -46,7 +43,7 @@ def get_vectorstore(text_chunks):
 
 def get_conversation_chain(vectorstore):
    # llm = ChatOpenAI()
-    llm = HuggingFaceHub(repo_id="google/flan-t5-xxl", model_kwargs={"temperature":0.5, "max_length":512},huggingfacehub_api_token=huggingface_token)
+    llm = HuggingFaceHub(repo_id="google/flan-t5-xxl", model_kwargs={"temperature":0.5, "max_length":512})
 
     memory = ConversationBufferMemory(
         memory_key='chat_history', return_messages=True)