Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/ondemand/test.ondemandpro.net/vendor/symfony/process/Tests/ProcessUtilsTest.php:20 Stack trace: #0 {main} thrown in /home/ondemand/test.ondemandpro.net/vendor/symfony/process/Tests/ProcessUtilsTest.php on line 20