Fusion API Error when getting Chamfer Edge Set

[robertASTUP]

I am trying to get out the edge set for a chamfer in the attached model. When I create the chamfer by selecting a face and run the below script, I get a "RuntimeError: 2 : InternalValidationError : dataRef" error. When I select all 4 edges to form the edge set, this runs with no issues. Is this a bug in the API or does the script need modified for if the edge sets contain faces or edges?

import adsk.fusion, adsk.core 
app = adsk.core.Application.get() 
design = adsk.fusion.Design.cast(app.activeProduct) 

timeline = design.timeline 
chamfer = timeline.item(1).entity 

# roll timeline to before chamfer 
timeline.item(1).rollTo(True) 

# get edge sets 
edge_sets = chamfer.edgeSets 

print(edge_sets.item(0).edges)

[john.kirchner]

This looks like a bug in the API, you shouldn't need to check in your script if the chamfer's edge sets contain faces, edges, etc before grabbing the edges.

I have reproduced the issue on my end and have created a bug ticket, thank you for posting this!