Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/eui9b4xs/public_html/dfy/vendor/nicmart/tree/test/Unit/Node/NodeTest.php:25 Stack trace: #0 {main} thrown in /home/eui9b4xs/public_html/dfy/vendor/nicmart/tree/test/Unit/Node/NodeTest.php on line 25