diff --git a/app/Http/Controllers/Admin/CourseSignController.php b/app/Http/Controllers/Admin/CourseSignController.php
index 462d6f7..43de2e1 100755
--- a/app/Http/Controllers/Admin/CourseSignController.php
+++ b/app/Http/Controllers/Admin/CourseSignController.php
@@ -571,7 +571,7 @@ class CourseSignController extends BaseController
                 if (empty($model)) continue;
                 $data = ['course_id' => $all['course_id'], 'course_sign_id' => $id, 'status_text' => CourseSign::$intToString['status'][$all['status']]];
                 $model->status = $all['status'];
-                $model->reason = $all['reason']??'';
+                $model->reason = $all['reason'] ?? '';
                 $model->save();
                 if ($model->status == 1) {
                     Notification::send(User::find($model->user_id), new AuditNotify($data));