Fatal error: Uncaught Error: Class "Module" not found in /home/vivliari/public_html/presta-validator/vendor/prestashop/header-stamp/tests/integration/module-samples/existing-headers-discrimination/existing-headers-discrimination.php:11 Stack trace: #0 {main} thrown in /home/vivliari/public_html/presta-validator/vendor/prestashop/header-stamp/tests/integration/module-samples/existing-headers-discrimination/existing-headers-discrimination.php on line 11