Update app.py

app.py

@@ -151,7 +151,7 @@ def initialize_llm():
 
         # Initialize with minimal settings
         llm = HuggingFaceHub(
-            repo_id="facebook/opt-6.7b",  # Using a simpler model for testing
+            repo_id="google/flan-t5-xxl",  # Using a simpler model for testing
             huggingfacehub_api_token=api_token,
         )