<?php 
defined( 'ABSPATH' ) or die( 'Cheatin\' uh?' );

if ( defined( 'WPB_VC_VERSION' ) && class_exists( 'Vc_Manager' ) ) :
    /*
     * Disable nonce checking for Visual Composer grid
     */
    add_filter( 'vc_grid_get_grid_data_access','__return_true' );
endif;