Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /srv/www/sites/public/laura/vendor/kalnoy/nestedset/tests/ScopedNodeTest.php:6 Stack trace: #0 {main} thrown in /srv/www/sites/public/laura/vendor/kalnoy/nestedset/tests/ScopedNodeTest.php on line 6