Fatal error: Uncaught Error: Class "Kirby\Cms\Collection" not found in /volume1/web/public/kirbi/kirby-4.1.0/src/Cms/Items.php on line 19

Error: Class "Kirby\Cms\Collection" not found in /volume1/web/public/kirbi/kirby-4.1.0/src/Cms/Items.php on line 19

Call Stack:
    0.0002     353128   1. {main}() /volume1/web/public/kirbi/kirby-4.1.0/src/Cms/Items.php:0