zeeBizCard slider error

I am using the zeeBizCard theme and when I choose the page with slider template I get this error:

Fatal error: Call to undefined function themeZee_display_plugin_slider() in /home/content/v/a/n/vanityasart/html/wp-content/themes/zeebizzcard/template-slider.php on line 13

This is line 13:

themeZee_display_plugin_slider();

Any ideas?