Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in I:\www\frameworks\Laravel\vendor\phar-io\version\tests\Unit\PreReleaseSuffixTest.php:10 Stack trace: #0 {main} thrown in I:\www\frameworks\Laravel\vendor\phar-io\version\tests\Unit\PreReleaseSuffixTest.php on line 10