Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/recabarr/appl_tracking/tests/Invoice/NumberGenerator/ConfigurableNumberGeneratorTest.php:27 Stack trace: #0 {main} thrown in /home/recabarr/appl_tracking/tests/Invoice/NumberGenerator/ConfigurableNumberGeneratorTest.php on line 27