Fatal error: Uncaught Error: Interface "FunctionalPHP\FantasyLand\Monad" not found in C:\laragon\www\ado365n\vendor\widmogrod\php-functional\src\Primitive\Listt.php:13 Stack trace: #0 {main} thrown in C:\laragon\www\ado365n\vendor\widmogrod\php-functional\src\Primitive\Listt.php on line 13