Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /home/appilogicx/public_html/marketing/vendor/aws/aws-php-sns-message-validator/tests/MessageValidatorTest.php:7 Stack trace: #0 {main} thrown in /home/appilogicx/public_html/marketing/vendor/aws/aws-php-sns-message-validator/tests/MessageValidatorTest.php on line 7