这个错误开始出现,我不知道为什么。
> in
> /sites/site1/www/Symfony/vendor/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
> line 678
> at ContainerBuilder->getDefinition() in /sites/site1/www/Symfony/vendor/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
> line 703
> at ContainerBuilder->findDefinition() in /sites/site1/www/Symfony/vendor/symfony/src/Symfony/Bundle/SwiftmailerBundle/DependencyInjection/Compiler/RegisterPluginsPass.php
> line 31