Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /home/demoinvfsanz/public_html/vendor/jeremeamia/superclosure/tests/Unit/SerializerTest.php:9 Stack trace: #0 {main} thrown in /home/demoinvfsanz/public_html/vendor/jeremeamia/superclosure/tests/Unit/SerializerTest.php on line 9