Add core_version_requirement: ^8 || ^9 to scrollbar.info.yml to designate that the module is compatible with Drupal 9.
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3128846. -->
Reported by: [neetu morwani](https://www.drupal.org/user/2632025)
>>>
issue