Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/swamen5/smaw.centosquare.com/vendor/symfony/yaml/Tests/ParserTest.php:18 Stack trace: #0 {main} thrown in /home/swamen5/smaw.centosquare.com/vendor/symfony/yaml/Tests/ParserTest.php on line 18