TypeError: i.Model is not a constructor

Problem/Motivation

On Drupal 10.3, WYSIWYG using CK Editor 5 failed to load with the following error:

TypeError: i.Model is not a constructor
at Object.callback (ckmoon.js?smk7ki:1:1349)
at Vo.create (ckeditor5-dll.js?v=41.3.1:5:567323)
at ckeditor5-dll.js?v=41.3.1:5:531205
at Array.map ()
at dt._buildItemsFromConfig (ckeditor5-dll.js?v=41.3.1:5:531113)
at dt.fillFromConfig (ckeditor5-dll.js?v=41.3.1:5:530971)
at r._initToolbar (editor-classic.js?v=41.3.1:4:6631)
at r.init (editor-classic.js?v=41.3.1:4:6162)
at editor-classic.js?v=41.3.1:4:10912