Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /Users/m4_production_1/Sites/ipt/iptkids/vendor/mobiledetect/mobiledetectlib/tests/BasicsTest.php:9 Stack trace: #0 {main} thrown in /Users/m4_production_1/Sites/ipt/iptkids/vendor/mobiledetect/mobiledetectlib/tests/BasicsTest.php on line 9