Error ultimate branding

Hi there,
I see this on all customers dashboards:

Warning: in_array() expects parameter 2 to be array, null given in C:\domains\something.nl\wwwroot\wp-content\plugins\ultimate-branding\ultimate-branding-files\modules\custom-admin-bar-files\inc\UB_Admin_Bar.php on line 612

What can be done about this?

Cheers!