Further update the error message

app.py

@@ -376,7 +376,8 @@ def set_up_chat_ui():
                     ' the input field on the sidebar to the left.'
                     '\n\nDon\'t have a token? Get your free'
                     ' [HF access token](https://huggingface.co/settings/tokens) now'
-                    ' and start creating your slide deck!',
+                    ' and start creating your slide deck! Alternatively, choose a different LLM'
+                    ' and provider from the list.',
                     should_log=True
                 )
             else: