Fatal error: Uncaught Error: Call to a member function loadFromExtension() on null in /home/itrave/dev.etravel.cm/api5/vendor/symfony/swiftmailer-bundle/Tests/DependencyInjection/Fixtures/config/php/spool.php:3 Stack trace: #0 {main} thrown in /home/itrave/dev.etravel.cm/api5/vendor/symfony/swiftmailer-bundle/Tests/DependencyInjection/Fixtures/config/php/spool.php on line 3