Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/shiftict/public_html/eventech/vendor/sebastian/exporter/tests/ExporterTest.php:18 Stack trace: #0 {main} thrown in /home/shiftict/public_html/eventech/vendor/sebastian/exporter/tests/ExporterTest.php on line 18