Update app.py

app.py

@@ -33,7 +33,7 @@ def generate_response(user_message, model_name, max_tokens, temperature, top_k,
         sep_tag = ""
         end_tag = "<|end|>"
     else:
-        raise ValueError("Invalid model selected")
+        raise ValueError("Error loading on models")
 
     # Recommended prompt settings by Microsoft
     system_message = "You are a friendly and knowledgeable assistant, here to help with any questions or tasks."