fix question_text2 bug

app.py

@@ -151,7 +151,10 @@ def run_and_submit_all(profile: gr.OAuthProfile | None):
         try:
             if task_id in tasks:
                 question_text2 = question_text + f"\n\nThis is the file path: {file_path + tasks[task_id]}"
+            if question_text2 is None:
+                question_text2 = question_text
             submitted_answer = agent(question_text2)
+            question_text2 = None
             answers_payload.append({"task_id": task_id, "submitted_answer": submitted_answer})
             results_log.append({"Task ID": task_id, "Question": question_text, "Submitted Answer": submitted_answer})
         except Exception as e: