Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in C:\SistemasPHP\observatorio4\vendor\symfony-cmf\routing\tests\Unit\Routing\ChainRouterTest.php:33 Stack trace: #0 {main} thrown in C:\SistemasPHP\observatorio4\vendor\symfony-cmf\routing\tests\Unit\Routing\ChainRouterTest.php on line 33