Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in D:\Server\ProjectJI\vendor\aws\aws-sdk-php\tests\LexModelsV2\LexModelsV2ClientTest.php:15 Stack trace: #0 {main} thrown in D:\Server\ProjectJI\vendor\aws\aws-sdk-php\tests\LexModelsV2\LexModelsV2ClientTest.php on line 15