Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/cvpchat/public_html/websocket/vendor/riverline/multipart-parser/tests/PartTest.php:19 Stack trace: #0 {main} thrown in /home/cvpchat/public_html/websocket/vendor/riverline/multipart-parser/tests/PartTest.php on line 19