fix

app/Repositories/V2/MemberGroupRepository.php

@@ -129,8 +129,8 @@ class MemberGroupRepository {
                 foreach($member_ids as $value){
                     $member_data[] = [
                         'member_group_id' => $memberGroup->id,
-                        'uid' => $value->id,
-                        'sort' => $value->sort,
+                        'uid' => $value['id'],
+                        'sort' => $value['sort'],
                     ];
                 }
                 $this->memberGroupInfo->insert($member_data);