Fatal error: Uncaught exception 'InvalidArgumentException' with message 'The sender, recipient and subject or an email prototype have to be specified to use a SwiftMailerHandler' in /home/skaphandrus/vendor/symfony/symfony/src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php:179 Stack trace: #0 /home/skaphandrus/vendor/symfony/symfony/src/Symfony/Component/Config/Definition/Builder/ExprBuilder.php(231): Symfony\Component\Config\Definition\Builder\ExprBuilder->Symfony\Component\Config\Definition\Builder\{closure}(Array) #1 /home/skaphandrus/vendor/symfony/symfony/src/Symfony/Component/Config/Definition/BaseNode.php(309): Symfony\Component\Config\Definition\Builder\ExprBuilder::Symfony\Component\Config\Definition\Builder\{closure}(Array) #2 /home/skaphandrus/vendor/symfony/symfony/src/Symfony/Component/Config/Definition/PrototypedArrayNode.php(199): Symfony\Component\Config\Definition\BaseNode->finalize(Array) #3 /home/skaphandrus/vendor/symfony/symfony/src/Symfony/Component/Config/Definition/BaseNode.php(303): S in /home/skaphandrus/vendor/symfony/symfony/src/Symfony/Component/Config/Definition/BaseNode.php on line 313