Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/roberto2666/portalchines.com.br/vendor/climba-commerce/mercadopago-sdk-php/tests/MercadoPago/Client/Integration/Preference/PreferenceClientITTest.php:15 Stack trace: #0 {main} thrown in /home/roberto2666/portalchines.com.br/vendor/climba-commerce/mercadopago-sdk-php/tests/MercadoPago/Client/Integration/Preference/PreferenceClientITTest.php on line 15