Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/trairtil/public_html/vendor/guzzlehttp/psr7/tests/InflateStreamTest.php:15 Stack trace: #0 {main} thrown in /home/trairtil/public_html/vendor/guzzlehttp/psr7/tests/InflateStreamTest.php on line 15