Fatal error: Uncaught Error: Interface 'Laminas\Feed\Writer\ExtensionManagerInterface' not found in C:\SistemasPHP\observatorio4\vendor\laminas\laminas-feed\src\Writer\StandaloneExtensionManager.php:13 Stack trace: #0 {main} thrown in C:\SistemasPHP\observatorio4\vendor\laminas\laminas-feed\src\Writer\StandaloneExtensionManager.php on line 13