Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/php8crons/public_html/amazon-sp-api/vendor/nyholm/psr7/tests/Factory/Psr17FactoryTest.php:10 Stack trace: #0 {main} thrown in /home/php8crons/public_html/amazon-sp-api/vendor/nyholm/psr7/tests/Factory/Psr17FactoryTest.php on line 10