Fatal error: Uncaught Error: Class "PHPStan\Testing\PHPStanTestCase" not found in C:\xampp\htdocs\r10csm\vendor\nesbot\carbon\tests\PHPStan\MacroExtensionTest.php:30 Stack trace: #0 {main} thrown in C:\xampp\htdocs\r10csm\vendor\nesbot\carbon\tests\PHPStan\MacroExtensionTest.php on line 30