Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\xampp\htdocs\ApiSigestWin\1.20.01.27.5\vendor\symfony\var-exporter\Tests\VarExporterTest.php:19 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ApiSigestWin\1.20.01.27.5\vendor\symfony\var-exporter\Tests\VarExporterTest.php on line 19