error plugins\revslider\inc_php\framework\base_admin.class.php on line 80

Hello,
I run into problem with this error “error plugins\revslider\inc_php\framework\base_admin.class.php on line 80″… and i manage to solve it.

Solution is in base_admin.class.php on line 23 :

Replace

private static $arrMetaBoxes = "";

with

private static $arrMetaBoxes = array();

Problem detected on local server while developing website.