Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /mnt/volume_lon1_01/backend/admin/vendor/scrivo/highlight.php/test/MarkupTest.php:33 Stack trace: #0 {main} thrown in /mnt/volume_lon1_01/backend/admin/vendor/scrivo/highlight.php/test/MarkupTest.php on line 33