/* WEBSITE REQUIRED */
function wcv_vendor_company_url_required( $args ) {
    $args[ 'custom_attributes' ] = array(
	'data-rules' => 'required',
	'data-error' => __( 'This field is required.', 'wcvendors-pro' )
	);
    return $args;
}
add_filter( 'wcv_vendor_company_url', 'wcv_vendor_company_url_required' );