Update app.py

app.py

@@ -116,8 +116,8 @@ image_tool = Tool(
 )
 
 repl_tool = PythonREPLTool()
-
-llm = HuggingFaceHub(repo_id="google/flan-t5-xl", model_kwargs={"temperature": 0.2, "max_length": 1024})
+hf_token = os.environ.get("HUGGINGFACEHUB_API_TOKEN")
+llm = HuggingFaceHub(repo_id="google/flan-t5-xl", huggingfacehub_api_token=hf_token,model_kwargs={"temperature": 0.2, "max_length": 1024})
 
 tools = [wiki_tool, youtube_tool, audio_tool, excel_tool, image_tool, repl_tool]
 agent_instance = initialize_agent(tools, llm, agent="zero-shot-react-description", verbose=True)