Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in D:\xampp\htdocs\_live\innogas\customer-innoGas\tests\Unit\ExampleTest.php:7 Stack trace: #0 {main} thrown in D:\xampp\htdocs\_live\innogas\customer-innoGas\tests\Unit\ExampleTest.php on line 7