include ACF into Sage 9

filters.php

/**
 * Customize ACF path
 */
add_filter('acf/settings/path', function ( $path ) {

    $path = get_stylesheet_directory() . '/../vendor/advanced-custom-fields/advanced-custom-fields-pro/';

    return $path;

});

/**
 * Customize ACF dir
 */
add_filter('acf/settings/dir', function ( $dir ) {

    $dir = get_stylesheet_directory_uri() . '/../vendor/advanced-custom-fields/advanced-custom-fields-pro/';

    return $dir;

});

/**
 * Hide ACF field group menu item
 */
// add_filter('acf/settings/show_admin', '__return_false');

/**
 * include ACF
 */
include_once( get_stylesheet_directory() . '/../vendor/advanced-custom-fields/advanced-custom-fields-pro/acf.php' );