Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in D:\Server\ProjectJI\vendor\aws\aws-sdk-php\tests\Crypto\Polyfill\AesGcmTest.php:13 Stack trace: #0 {main} thrown in D:\Server\ProjectJI\vendor\aws\aws-sdk-php\tests\Crypto\Polyfill\AesGcmTest.php on line 13