Hey there!

I'm trying to install and activate the slider Revolution and I get this error - 

Fatal error: Uncaught Error: Call to a member function get_url() on null in /home2/thehaqd6/public_html/divadesigntestsite/wp-content/plugins/revslider/includes/object-library.class.php:62 Stack trace: #0 /home2/thehaqd6/public_html/divadesigntestsite/wp-content/plugins/revslider/admin/revslider-admin.class.php(118): RevSliderObjectLibrary->_get_list() #1 /home2/thehaqd6/public_html/divadesigntestsite/wp-content/plugins/revslider/admin/revslider-admin.class.php(44): RevSliderAdmin->init() #2 /home2/thehaqd6/public_html/divadesigntestsite/wp-content/plugins/revslider/revslider.php(168): RevSliderAdmin->__construct('/home2/thehaqd6...') #3 /home2/thehaqd6/public_html/divadesigntestsite/wp-admin/includes/plugin.php(560): include_once('/home2/thehaqd6...') #4 /home2/thehaqd6/public_html/divadesigntestsite/wp-content/themes/thegem/plugins/class-tgm-plugin-activation.php(1042): activate_plugin('revslider/revsl...') #5 /home2/thehaqd6/public_html/divadesigntestsite/wp-content/themes/thegem/plugins/class-tgm-plugin-activation.php in /home2/thehaqd6/public_html/divadesigntestsite/wp-content/plugins/revslider/includes/object-library.class.php on line 62

If I could get some help that would be awesome. :)