Update app.py

app.py

@@ -14,7 +14,7 @@ import chainlit as cl
 llm = HuggingFaceHub(
     model_kwargs={"max_length": 500},
     repo_id="google/flan-t5-xxl",
-    huggingfacehub_api_token=os.environ["HUGGINGFACEHUB_API_TOKEN"],
+    huggingfacehub_api_token=os.environ["HUGGINGFACE_API_TOKEN"],
 )
 
 # Add the LLM provider