Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/tubu/public_html/Drupal_CMS/cms/vendor/consolidation/site-process/tests/RealtimeOutputHandlerTest.php:13 Stack trace: #0 {main} thrown in /home/tubu/public_html/Drupal_CMS/cms/vendor/consolidation/site-process/tests/RealtimeOutputHandlerTest.php on line 13