Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/imdstv/botelegram/vendor/mercadopago/dx-php/tests/MercadoPago/MercadoPagoConfigTest.php:9 Stack trace: #0 {main} thrown in /home/imdstv/botelegram/vendor/mercadopago/dx-php/tests/MercadoPago/MercadoPagoConfigTest.php on line 9