GraphObject.make requires a class function of GoJs class name or name of an object builder, not: undefined

Error reported after release:
GraphObject.make requires a class function of GoJs class name or name of an object builder, not: undefined.
I see that a friend asked the same question as mine before, but the reason for my question is not the same

If the app was working before, my guess is that some code is not loading now. You will need to debug it.

And you really need to update your forum profile information so that we can support you.

I’m really sorry for replying you so late.
Thank you very much. My information has been updated. Please have a look