Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/creantis/840suite.creantis.dev/840suite01/vendor/ezimuel/guzzlestreams/tests/AppendStreamTest.php:9 Stack trace: #0 {main} thrown in /home/creantis/840suite.creantis.dev/840suite01/vendor/ezimuel/guzzlestreams/tests/AppendStreamTest.php on line 9