Gojs internal error : Cannot read property 'Yc' of null

GoJS
#1

Hello, walter.

I’ve got this message while moving a node right after that I changed the node type.
Would you please check what is the reason for this?

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image.jpg1384×522 159 KB

#2

I’m sorry, but I cannot tell from those error messages.

#3

Please see this video.

I’ve implemented type change with fast-key ‘t’ like below.

function onKeyDown() {
    if (kptn == '   T') {
        //'T'
        var sel = _d.selection;
        if (sel.count == 0) return;

        _d.startTransaction('nodeSelectionConverting');

        var it = sel.iterator;
        while(it.next()) {
            var cat = it.value.part.category;
            if (cat == 'RefNode') {
                _d.model.setDataProperty(it.value.part.data, 'category', 'GoToNode');
            }
            else if (cat == 'GoToNode') {
                _d.model.setDataProperty(it.value.part.data, 'category', 'RefNode');
            }
            else {
                warning(`cannot change type for '${cat}'`, "Type Change");
            }
        }

        _d.commitTransaction('nodeSelectionConverting');
    }
}

Thank you!

#4

That code to change the category of some selected Parts looks fine. The problem is either in how those templates are defined or in some tool customization that you have.