I have Revolution Slider - Premium responsive slider plugin

Hi, I have Revolution Slider - Premium responsive slider plugin installed in wpmu and can't be activated.

Plugin could not be activated because it triggered a fatal error.
Fatal error: Call to undefined function mysql_error() in /var/www/html/wp-content/plugins/revslider/inc_php/framework/db.class.php on line 29

https://premium.wpmudev.org/forums/topic/revolution-slider-network-activate-failed?replies=1#post-1002892