Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/php8crons/public_html/amazon-sp-api/vendor/amazon-php/sp-api-sdk/tests/AmazonPHP/SellingPartner/Tests/Functional/SandboxTestCase.php:14 Stack trace: #0 {main} thrown in /home/php8crons/public_html/amazon-sp-api/vendor/amazon-php/sp-api-sdk/tests/AmazonPHP/SellingPartner/Tests/Functional/SandboxTestCase.php on line 14