diff --git a/app/common/library/wxserver/Server.php b/app/common/library/wxserver/Server.php
index 9191dc1c..2735244a 100644
--- a/app/common/library/wxserver/Server.php
+++ b/app/common/library/wxserver/Server.php
@@ -544,12 +544,12 @@ class Server
             if ($result && !empty($result['category_list'])) {
                 $category_list = $result['category_list'];
                 foreach ($category_list as $value) {
-                    $first_class = !empty($value['first_class']) ?? '';
-                    $second_class = !empty($value['second_class']) ?? '';
-                    $third_class = !empty($value['third_class']) ?? '';
-                    $first_id = !empty($value['first_id']) ?? '';
-                    $second_id = !empty($value['second_id']) ?? '';
-                    $third_id = !empty($value['third_id']) ?? '';
+                    $first_class = !empty($value['first_class']) ? $value['first_class'] : '';
+                    $second_class = !empty($value['second_class']) ? $value['second_class'] : '';
+                    $third_class = !empty($value['third_class']) ? $value['third_class'] : '';
+                    $first_id = !empty($value['first_id']) ? $value['first_id'] : '';
+                    $second_id = !empty($value['second_id']) ? $value['second_id'] : '';
+                    $third_id = !empty($value['third_id']) ? $value['third_id'] : '';
                     $data[] = [
                         'first_class' => $first_class,
                         'second_class' => $second_class,