Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Loader\Loader' not found in C:\SistemasPHP\observatorio4\vendor\symfony\dependency-injection\Loader\ClosureLoader.php:24 Stack trace: #0 {main} thrown in C:\SistemasPHP\observatorio4\vendor\symfony\dependency-injection\Loader\ClosureLoader.php on line 24