collection-crud/config/packages/twig.php

<?php declare(strict_types=1);

use Symfony\Config\TwigConfig;

return static function (TwigConfig $config): void {
	$config->formThemes(['form_custom_layout.html.twig'])
		->defaultPath('%kernel.project_dir%/templates')
		->debug('%kernel.debug%')
		->strictVariables('%kernel.debug%')
	;
};