Fatal error: Uncaught Error: Class "Assetic\AssetManager" not found in C:\xampp\htdocs\electronica\vendor\kriswallsmith\assetic\src\Assetic\Factory\LazyAssetManager.php:24 Stack trace: #0 {main} thrown in C:\xampp\htdocs\electronica\vendor\kriswallsmith\assetic\src\Assetic\Factory\LazyAssetManager.php on line 24