Fatal error: Uncaught Error: Class "Twig\Environment" not found in /var/www/examapp.co.uk/public_html/results/vendor/slim/twig-view/src/Twig.php:107 Stack trace: #0 /var/www/examapp.co.uk/public_html/results/vendor/slim/twig-view/src/Twig.php(97): Slim\Views\Twig->__construct() #1 /var/www/examapp.co.uk/public_html/results/index.php(55): Slim\Views\Twig::create() #2 {main} thrown in /var/www/examapp.co.uk/public_html/results/vendor/slim/twig-view/src/Twig.php on line 107