Fatal error: Uncaught Error: Interface "Tester\Runner\OutputHandler" not found in /var/www/html/smtp/vendor/nette/tester/src/Runner/Output/TapPrinter.php:19 Stack trace: #0 {main} thrown in /var/www/html/smtp/vendor/nette/tester/src/Runner/Output/TapPrinter.php on line 19