Update crashed my site

It had the same error on both of my sites after updating ultimate branding
Fatal error: Call to a member function get_current_tab() on null /wp-content/plugins/ultimate-branding/ultimate-branding-files/classes/class.ub.helper.php on line 33

The front page shows a 500 error on my test site and it is not possible to update using both wpmudev dashboard and also WordPress native plugin section. I have uploaded it using WordPress native plugins section after deleting it.