Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/html/api/tpicooleso/vendor/guzzlehttp/guzzle/tests/PrepareBodyMiddlewareTest.php:16 Stack trace: #0 {main} thrown in /var/www/html/api/tpicooleso/vendor/guzzlehttp/guzzle/tests/PrepareBodyMiddlewareTest.php on line 16