Fatal error: Uncaught Error: Class "BC_PHPUnit_Framework_TestCase" not found in I:\www\pvcHttp\vendor\mikey179\vfsstream\tests\phpunit\vfsStreamUmaskTestCase.php:29 Stack trace: #0 {main} thrown in I:\www\pvcHttp\vendor\mikey179\vfsstream\tests\phpunit\vfsStreamUmaskTestCase.php on line 29