Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\BK\bateriasec\vendor\picqer\php-barcode-generator\tests\BarcodeSvgTest.php:5 Stack trace: #0 {main} thrown in C:\xampp\htdocs\BK\bateriasec\vendor\picqer\php-barcode-generator\tests\BarcodeSvgTest.php on line 5