Need Assistance to Resolve Plug-in Notice

Hello,
Directly after installing the latest WordPress.org upgrade, I received the following notice. I need your help in resolving it.

"Notice: Trying to get property of non-object in /home4/wsbydesi/public_html/theadventuresofflapjack.com/wp-content/plugins/ultimate-branding/ultimate-branding-files/modules/favicons.php on line 252."

The notice is showing up at the top of my website's home page.

I look forward to hearing from you.

Sincerely,
Kimberly