Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Fragment\FragmentHandler" not found in C:\xampp\htdocs\desarrollos\Pruebas\lpt-pkg-demo-pwa\vendor\symfony\http-kernel\DependencyInjection\LazyLoadingFragmentHandler.php:23 Stack trace: #0 {main} thrown in C:\xampp\htdocs\desarrollos\Pruebas\lpt-pkg-demo-pwa\vendor\symfony\http-kernel\DependencyInjection\LazyLoadingFragmentHandler.php on line 23