Update app.py

app.py

@@ -1,7 +1,8 @@
 import gradio as gr
 from transformers import pipeline
 
-pipe = pipeline("conversational", model="meta-llama/Llama-2-7b-chat-hf")
+hf_token = os.getenv("HF_TOKEN")
+pipe = pipeline("conversational", model="meta-llama/Llama-2-7b-chat-hf", token=hf_token)
 
 demo = gr.Interface.from_pipeline(pipe)
 demo.launch()