Timeline example not working on local server

Hi, I’ve downloaded the timeline example to my local server. Here it throws the following error message:
GoJS version v1.8.36, using Coogle Chrome.
There are no changes to the code, except for removing load of goSamples.js.
Any idea why this happens?

Update: Problem fixed, installed v2.0.13, and sample is now working as expected.

yes, getDocumentBounds is new in 2.0.

1.8 only has getDocumentPoint

Thanks for info. And lesson learned; always use latest version :-)