File: //var/www/linde/wp-content/themes/linde/single-linde_faq.php
<?php
/**
 * The Template for displaying all single posts
 *
 * Methods for TimberHelper can be found in the /lib sub-directory
 *
 * @package  WordPress
 * @subpackage  Timber
 * @since    Timber 0.1
 */
    $context     = Timber::context();
    $timber_post     = Timber::get_post();
    $context['post'] = $timber_post;
    $context['files'] = [];
    $current_post_id = $timber_post->ID;
    
    if (have_rows('file_upload', $current_post_id)) {
    while (have_rows('file_upload', $current_post_id)) {
        the_row();
        $file = get_sub_field('select_file');
        $file_url = isset($file['url']) ? $file['url'] : '';
        $file_name = get_sub_field('file_name');
        if(!$file_name){
            $file_name = isset($file['filename']) ? $file['filename'] : '';
        }
        $context["files"][] = array(
            'file_url' => $file_url,
            'file_name' => $file_name,
            
            
        );
    }
}
    Timber::render( array('single-linde_faq.twig' ), $context );