Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /opt/lampp/htdocs/vendor/alibabacloud/tea-fileform/tests/FileFormTest.php:15
Stack trace:
#0 {main}
thrown in /opt/lampp/htdocs/vendor/alibabacloud/tea-fileform/tests/FileFormTest.php on line 15