diff --git a/RAGSDK/MainRepo/Samples/RagDemo/rag_demo_query.py b/RAGSDK/MainRepo/Samples/RagDemo/rag_demo_query.py
index ff5e747e208cdbba62adbb1346b4a0ae1e6a2b42..60982e54f63f639f556d22c6e3eff2f90a2f0ac1 100644
--- a/RAGSDK/MainRepo/Samples/RagDemo/rag_demo_query.py
+++ b/RAGSDK/MainRepo/Samples/RagDemo/rag_demo_query.py
@@ -5,6 +5,7 @@ import argparse
 import threading
 import traceback
 from loguru import logger
+from paddle.base import libpaddle
 from mx_rag.chain import SingleText2TextChain
 from mx_rag.embedding.local import TextEmbedding
 from mx_rag.embedding.service import TEIEmbedding
@@ -15,7 +16,7 @@ from mx_rag.retrievers import Retriever
 from mx_rag.storage.document_store import SQLiteDocstore
 from mx_rag.storage.vectorstore import MindFAISS
 from mx_rag.utils import ClientParam
-from paddle.base import libpaddle
+
 
 
 class CustomFormatter(argparse.ArgumentDefaultsHelpFormatter):
@@ -28,6 +29,10 @@ class CustomFormatter(argparse.ArgumentDefaultsHelpFormatter):
 
 class ThreadWithResult(threading.Thread):
     def __init__(self, group=None, target=None, name=None, args=None, kwargs=None, *, daemon=None):
+        if args is None:
+            args = ()
+        if kwargs is None:
+            kwargs = {}
         def function():
             self.result = target(*args, **kwargs)