Warning: Undefined variable $device in /home/engmatesin/public_html/wp-content/plugins/wordpress-popup/views/admin/commons/sui-wizard/tab-appearance/row-customize-elements/background-image/background-size.php on line 9

Fatal error: Uncaught Error: Using $this when not in object context in /home/engmatesin/public_html/wp-content/plugins/wordpress-popup/views/admin/commons/sui-wizard/tab-appearance/row-customize-elements/background-image/background-size.php:11 Stack trace: #0 {main} thrown in /home/engmatesin/public_html/wp-content/plugins/wordpress-popup/views/admin/commons/sui-wizard/tab-appearance/row-customize-elements/background-image/background-size.php on line 11