Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /var/www/html/__kfz.kaycrm.com/plugz/pdf-invoice-master/tests/CreateInvoiceTest.php:8 Stack trace: #0 {main} thrown in /var/www/html/__kfz.kaycrm.com/plugz/pdf-invoice-master/tests/CreateInvoiceTest.php on line 8