Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/servidor-laravel/vendor/chillerlan/php-qrcode/tests/Data/QRMatrixTest.php:24 Stack trace: #0 {main} thrown in /var/www/html/servidor-laravel/vendor/chillerlan/php-qrcode/tests/Data/QRMatrixTest.php on line 24