Fatal error: Uncaught Symfony\Component\DependencyInjection\Exception\RuntimeException: Class "Doctrine\Bundle\FixturesBundle\Fixture" not found while loading "Persephone\DataFixtures\AppFixtures". in /var/www/persephone-volume/vendor/symfony/dependency-injection/Compiler/DefinitionErrorExceptionPass.php:49 Stack trace: #0 /var/www/persephone-volume/vendor/symfony/dependency-injection/Compiler/Compiler.php(80): Symfony\Component\DependencyInjection\Compiler\DefinitionErrorExceptionPass->process(Object(Symfony\Component\DependencyInjection\ContainerBuilder)) #1 /var/www/persephone-volume/vendor/symfony/dependency-injection/ContainerBuilder.php(767): Symfony\Component\DependencyInjection\Compiler\Compiler->compile(Object(Symfony\Component\DependencyInjection\ContainerBuilder)) #2 /var/www/persephone-volume/vendor/symfony/http-kernel/Kernel.php(506): Symfony\Component\DependencyInjection\ContainerBuilder->compile() #3 /var/www/persephone-volume/vendor/symfony/http-kernel/Kernel.php(759): Symfony\Component\HttpKernel\Kernel->initializeContainer() #4 /var/www/persephone-volume/vendor/symfony/http-kernel/Kernel.php(185): Symfony\Component\HttpKernel\Kernel->preBoot() #5 /var/www/persephone-volume/vendor/symfony/runtime/Runner/Symfony/HttpKernelRunner.php(35): Symfony\Component\HttpKernel\Kernel->handle(Object(Symfony\Component\HttpFoundation\Request)) #6 /var/www/persephone-volume/vendor/autoload_runtime.php(29): Symfony\Component\Runtime\Runner\Symfony\HttpKernelRunner->run() #7 /var/www/persephone-volume/public/index.php(5): require_once('/var/www/persep...') #8 {main} thrown in /var/www/persephone-volume/vendor/symfony/dependency-injection/Compiler/DefinitionErrorExceptionPass.php on line 49