Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\xampp\htdocs\r10csm\vendor\sebastian\lines-of-code\tests\unit\LineCountingVisitorTest.php:26 Stack trace: #0 {main} thrown in C:\xampp\htdocs\r10csm\vendor\sebastian\lines-of-code\tests\unit\LineCountingVisitorTest.php on line 26