Update app.py

app.py

@@ -121,7 +121,7 @@ def test_handler(optionSelection, prompt: str = TEST_MESSAGE, openai_model_name:
             message, response = palm_text_completion(prompt,google_model_name)
             return message, response
         case  "Llama 2":
-            return "", ""
+            return f"{optionSelection} is not yet implemented!", ""
         case _:
             if optionSelection not in llm_api_options:
                 return ValueError("Invalid choice!"), ""