lamine_wp/web/app/themes/la_mine/single.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::query_post();
$context['post'] = $timber_post;

$categories = get_the_terms( $id, 'category' );

foreach ( $categories as $category ) {
  $cat = $category->slug;
}

$current_id[] = get_the_ID();

$args = get_posts(array(
  'post_type' => 'post',
  'post_status' => 'publish',
  'orderby' => 'date',
  'order' => 'DESC',
  'posts_per_page' => -1,
  'category_name' => $cat,
  'post__not_in' => $current_id,
));

$context['other'] = $args;

Timber::render('single.twig', $context );