Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/diligence/public_html/connect/script/vendor/php-mqtt/client/tests/TestCase.php:12 Stack trace: #0 {main} thrown in /home/diligence/public_html/connect/script/vendor/php-mqtt/client/tests/TestCase.php on line 12