Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/livosotech/sites/fixit.livosotech.com/vendor/rap2hpoutre/fast-excel/tests/TestCase.php:10 Stack trace: #0 {main} thrown in /home/livosotech/sites/fixit.livosotech.com/vendor/rap2hpoutre/fast-excel/tests/TestCase.php on line 10