[vc_row type=”in_container” full_screen_row_position=”middle” scene_position=”center” text_color=”dark” text_align=”left” overlay_strength=”0.3″][vc_column column_padding=”no-extra-padding” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_shadow=”none” width=”1/1″ tablet_text_alignment=”default” phone_text_alignment=”default” column_border_width=”none” column_border_style=”solid”][vc_column_text]Kindly replace below 2 files

1. db.class.php (/wp-content/plugins/revslider/includes/framework/db.class.php) line 31

private function checkForErrors($prefix = “”){
global $wpdb;

if($this->wpdb->last_error){
$query = $this->wpdb->last_query;
$message = $this->wpdb->last_error;

if($prefix) $message = $prefix.’ – ‘.$message.’‘;
if($query) $message .= ‘

Query: ‘ . esc_attr($query);

$this->throwError($message);
}
}

2. base_admin.class.php (/wp-content/plugins/revslider/includes/framework/base_admin.class.php) line 21

Change the $arrMetaBoxes to private static $arrMetaBoxes = array();
[/vc_column_text][/vc_column][/vc_row]