Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/rt66ugcom/public_html/admin/vendor/psy/psysh/test/CodeCleanerTest.php:16 Stack trace: #0 {main} thrown in /home/rt66ugcom/public_html/admin/vendor/psy/psysh/test/CodeCleanerTest.php on line 16