FacturesController.php

<?php
namespace App\Controller;

use Cake\ORM\TableRegistry;
use Cake\I18n\Time;
use iio\libmergepdf\Merger;

/**
 * Factures Controller
 *
 * @property \App\Model\Table\FacturesTable $Factures
 */
class FacturesController extends AppController
{
    public function initialize()
    {
        parent::initialize();
        $this->_validViewOptions[] = 'pdfConfig';
    }