Fatal error: Uncaught Error: Class "Nette\DI\CompilerExtension" not found in /var/www/html/smtp/vendor/nette/di/src/DI/Extensions/DIExtension.php:19 Stack trace: #0 {main} thrown in /var/www/html/smtp/vendor/nette/di/src/DI/Extensions/DIExtension.php on line 19