Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/servidor-laravel/vendor/simplesoftwareio/simple-qrcode/tests/ImageMergeTest.php:7 Stack trace: #0 {main} thrown in /var/www/html/servidor-laravel/vendor/simplesoftwareio/simple-qrcode/tests/ImageMergeTest.php on line 7