Fatal error: Uncaught Error: Class 'Symfony\Component\Yaml\Exception\RuntimeException' not found in /home/synap/fr/synap/clients/www/melody/outils/tests/vendor/symfony/yaml/Symfony/Component/Yaml/Exception/DumpException.php:21 Stack trace: #0 {main} thrown in /home/synap/fr/synap/clients/www/melody/outils/tests/vendor/symfony/yaml/Symfony/Component/Yaml/Exception/DumpException.php on line 21