修改bug

app/admin/controller/Kefu.php

@@ -68,7 +68,7 @@ class Kefu extends BaseController
                 $chat_num = $value['inprocess'] + $value['unprocessed'];
                 if ($chat_num != $value['chat_num']) {
                     $value['chat_num'] = $chat_num;
-                    User::where('user_id', $value['user_id'])->update('chat_num', $chat_num);
+                    User::where('user_id', $value['user_id'])->update(['chat_num' => $chat_num]);
                 }
             }