Update app.py

app.py

@@ -80,7 +80,7 @@ query_engine_tools = [
 
 query_engine = SubQuestionQueryEngine.from_defaults(query_engine_tools=query_engine_tools) 
 """
-async def main(query):
+def main(query):
     
     query_engine = index.as_query_engine()
     response = query_engine.query(query)