如何使用Symfony 5.1，Monolog和Mailer组件配置通过邮件发送错误？

composer create-project symfony/website-skeleton my-project

monolog:
    handlers:
        main:
            type: fingers_crossed
            action_level: error
            handler: grouped
        grouped:
            type: group
            members: [streamed, buffered]
        streamed:
            type: stream
            path: '%kernel.logs_dir%/%kernel.environment%.log'
            level: debug
        buffered:
            type: buffer
            handler: swift
        swift:
            type: swift_mailer
            from_email: 'your-email@example.com'
            to_email: 'recipient-email@example.com'
            subject: 'Error occurred!'
            level: debug

swiftmailer:
    transport: smtp
    host: 'smtp.example.com'
    port: 587
    encryption: tls
    username: 'your-username'
    password: 'your-password'
    spool: { type: 'memory' }

use Psr\Log\LoggerInterface;

class MyController
{
    private $logger;

    public function __construct(LoggerInterface $logger)
    {
        $this->logger = $logger;
    }

    public function index()
    {
        try {
            // 代码逻辑
        } catch (\Exception $e) {
            $this->logger->error('An error occurred: ' . $e->getMessage());
        }
    }
}