Erro no Revolution Slider – Fatal error: Uncaught Error: [] operator not supported for strings in

Fatal error: Uncaught Error: [] operator not supported for strings in /home/kinkusr/public_html/wp-content/plugins/revslider/includes/framework/base-admin.class.php:71 Stack trace: #0 /home/kinkusr/public_html/wp-content/plugins/revslider/admin/revslider-admin.class.php(572): RevSliderBaseAdmin::addMetaBox(‘Revolution Slid…’, ”, Array, NULL) #1 /home/kinkusr/public_html/wp-content/plugins/revslider/admin/revslider-admin.class.php(73): RevSliderAdmin->addSliderMetaBox() #2 /home/kinkusr/public_html/wp-content/plugins/revslider/admin/revslider-admin.class.php(44): RevSliderAdmin->init() #3 /home/kinkusr/public_html/wp-content/plugins/revslider/revslider.php(162): RevSliderAdmin->__construct(‘/home/kinkusr/p…’) #4 /home/kinkusr/public_html/wp-admin/includes/plugin.php(1943): include(‘/home/kinkusr/p…’) #5 /home/kinkusr/public_html/wp-admin/plugins.php(164): plugin_sandbox_scrape(‘revslider/revsl…’) #6 {main} thrown in /home/kinkusr/public_html/wp-content/plugins/revslider/includes/framework/base-admin.class.php on line 71

Altere a linha 21 em revslider / includes / framework / base-admin.class.php

a partir de

private static $arrMetaBoxes = ”; //option boxes that will be added to post

para

private static $arrMetaBoxes = array(); //option boxes that will be added to post