diff --git a/app/model/Source.php b/app/model/Source.php
index c607c7c..e4e28a3 100644
--- a/app/model/Source.php
+++ b/app/model/Source.php
@@ -109,7 +109,8 @@ class Source extends QfShop
             $ip = $_SERVER['REMOTE_ADDR'];
             $ips = Log::where(['ip'=>$ip])->find();
             if(empty($ips)){
-                Log::save(['name' => '访问记录','ip'=>$ip]);
+                $log = new Log();
+                $log->save(['name' => '访问记录','ip'=>$ip]);
             }else{
                 Log::where('id', $ips['id'])->update(['update_time' => time()]);
             }
diff --git a/chatgpt-on-wechat/config.json b/chatgpt-on-wechat/config.json
index b9ab4a5..4d608f0 100644
--- a/chatgpt-on-wechat/config.json
+++ b/chatgpt-on-wechat/config.json
@@ -11,7 +11,8 @@
     "text_to_voice": "openai",
     "proxy": "",
     "hot_reload": true,
-    "single_chat_prefix": [""],
+    "group_at_off": false,
+    "single_chat_prefix": ["bot", "@bot"],
     "single_chat_reply_prefix": "[bot]",
     "group_chat_prefix": [
         "@bot"