Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/trairtil/public_html/vendor/tijsverkoyen/css-to-inline-styles/tests/Css/Rule/RuleTest.php:10 Stack trace: #0 {main} thrown in /home/trairtil/public_html/vendor/tijsverkoyen/css-to-inline-styles/tests/Css/Rule/RuleTest.php on line 10