Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/bforce/delis-old.bforce.ma/vendor/sebastian/type/tests/unit/NullTypeTest.php:17 Stack trace: #0 {main} thrown in /home/bforce/delis-old.bforce.ma/vendor/sebastian/type/tests/unit/NullTypeTest.php on line 17