Steps to reproduce the issue

1. Upgrade Joomla site with Web Links from 3.x to 4.4.0.
2. Navigate to Web Links on web site.
3. Select a category to list links in that category.

Expected result

Links are listed, with their descriptions, and work.
No errors or warnings are displayed.

Actual result

Links are listed, with their descriptions, and work.
However, above every link I see this:

Warning: Undefined variable $userId in
/var/www/sitepath/components/com_weblinks/tmpl/category/default_items.php
on line 87

System information (as much as possible)

Ubuntu Linux 18.04.6
Apache
PHP 8.0.29

Additional comments

Web Links were working fine on the Joomla 3. site.