Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/eticon/public_html/webservice/vendor/mtownsend/request-xml/tests/RequestXmlTest.php:8 Stack trace: #0 {main} thrown in /home/eticon/public_html/webservice/vendor/mtownsend/request-xml/tests/RequestXmlTest.php on line 8