Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /var/www/lindinhas.net/vendor/mercadopago/dx-php/tests/SDKTest.php:12 Stack trace: #0 {main} thrown in /var/www/lindinhas.net/vendor/mercadopago/dx-php/tests/SDKTest.php on line 12