When using this call: ``` $(listId).sortable({ handle : '.sortablehandle', onChange: function() { //... } }); ``` I am getting the following error in jquery-sortable.js:68: `Uncaught TypeError: Cannot use 'in' operator to search for '#<Object>' in undefined` I am using this versions: - "jquery": "^3.4.1", - "jquery-sortablejs": "^1.0.1", - "sortablejs": "^1.10.2",