Fatal error: Uncaught Error: Class 'PHPUnit_Framework_TestCase' not found in /home/app/htdocs/message_gateway_20231016/vendor/tijsverkoyen/css-to-inline-styles/tests/Css/Property/ProcessorTest.php:8 Stack trace: #0 {main} thrown in /home/app/htdocs/message_gateway_20231016/vendor/tijsverkoyen/css-to-inline-styles/tests/Css/Property/ProcessorTest.php on line 8