diff --git a/README.md b/README.md
index e378913..7cf32aa 100644
--- a/README.md
+++ b/README.md
@@ -221,6 +221,6 @@ Web UI 可以实现如下功能：
 - [x] VUE 前端
 
 ## 项目交流群
-![二维码](img/qr_code_22.jpg)
+![二维码](img/qqr_code_1.jpg)
 
 🎉 langchain-ChatGLM 项目交流群，如果你也对本项目感兴趣，欢迎加入群聊参与讨论交流。
diff --git a/img/qqr_code_1.jpg b/img/qqr_code_1.jpg
new file mode 100644
index 0000000..9ae3f06
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diff --git a/img/qr_code_21.jpg b/img/qr_code_21.jpg
deleted file mode 100644
index a8d374b..0000000
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diff --git a/img/qr_code_22.jpg b/img/qr_code_22.jpg
deleted file mode 100644
index 76ab080..0000000
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diff --git a/models/chatglm_llm.py b/models/chatglm_llm.py
index 09970b3..992fab6 100644
--- a/models/chatglm_llm.py
+++ b/models/chatglm_llm.py
@@ -1,13 +1,9 @@
-
 from abc import ABC
-
 from langchain.llms.base import LLM
 from typing import Optional, List
 from models.loader import LoaderCheckPoint
 from models.base import (BaseAnswer,
                          AnswerResult)
-
-
 import transformers