Fatal error: Uncaught Error: Trait "Symfony\Component\Console\Command\LockableTrait" not found in /home/neondra/www/vendor/symfony/console/Tests/Fixtures/FooLock4InvokableCommand.php:8 Stack trace: #0 {main} thrown in /home/neondra/www/vendor/symfony/console/Tests/Fixtures/FooLock4InvokableCommand.php on line 8