Update app.py

app.py

@@ -314,10 +314,10 @@ def start_answer_generation(model_choice: str):
     Start the answer generation process in a separate thread.
     """
     if processing_status["is_processing"]:
-        return "Answer generation is already in progress.", None
+        return "Answer generation is already in progress."
     
     if not cached_questions:
-        return "No questions available. Please fetch questions first.", None
+        return "No questions available. Please fetch questions first."
     
     # Map model choice to actual model name
     model_map = {
@@ -332,7 +332,7 @@ def start_answer_generation(model_choice: str):
     thread.daemon = True
     thread.start()
     
-    return f"Answer generation started using {model_choice}. Check progress below.", None
+    return f"Answer generation started using {model_choice}. Check progress."
 
 def get_generation_progress():
     """