Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in /home/rpios/php-ovh/vendor/guzzlehttp/psr7/tests/FunctionsTest.php:8 Stack trace: #0 {main} thrown in /home/rpios/php-ovh/vendor/guzzlehttp/psr7/tests/FunctionsTest.php on line 8