Glitch in Ultimate Branding for one of my site!

Hi,
I observed this bug in my site admin area: Warning: array_intersect(): Argument #1 is not an array in /home/project3/public_html/wp-content/plugins/ultimate-branding/ultimate-branding-files/modules/custom-admin-bar-files/inc/UB_Admin_Bar.php on line 621

How can you aid solved this?

Regards