Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/ondemand/test.ondemandpro.net/php-docs-samples/kms/vendor/sebastian/diff/tests/ChunkTest.php:18 Stack trace: #0 {main} thrown in /home/ondemand/test.ondemandpro.net/php-docs-samples/kms/vendor/sebastian/diff/tests/ChunkTest.php on line 18