Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in /home/rpios/php-ovh/vendor/guzzlehttp/promises/tests/RejectedPromiseTest.php:10 Stack trace: #0 {main} thrown in /home/rpios/php-ovh/vendor/guzzlehttp/promises/tests/RejectedPromiseTest.php on line 10