Fatal error: Uncaught Error: Interface 'Laminas\Feed\Writer\ExtensionManagerInterface' not found in C:\SistemasPHP\observatorio4\vendor\laminas\laminas-feed\src\Writer\ExtensionManager.php:14 Stack trace: #0 {main} thrown in C:\SistemasPHP\observatorio4\vendor\laminas\laminas-feed\src\Writer\ExtensionManager.php on line 14