Programmatically generating connectors("edges") not supported?

[dapper87]

I am trying to work with ChatGPT to generate speaker layout diagrams and wire path tables. It's running into an issue where it is able to generate a bunch of speaker shape blocks with metadata according to a scheme I specify, and I can import that as a *.drawio file. However, if it tries to add lines to the diagram (it believes Draw.io treats them as edges with thickness 1), or even generate a diagram with 4 lines, I get a "could not load object mxGeometry" error. I haven't worked with Draw.io in this way before, so let me know if there is anything else I should provide.

EDIT: When I create a diagram, put in two shapes, draw a connector, export as xml, and then reimport, it works. ChatGPT is able to modify the shapes and the connectors, but cannot add another connector to the diagram, or use that as a template to generate the same diagram on its own. Below is an example file where ChatGPT tried to add one connector and one shape to an existing diagram I made. Import failed on that one.

Generative_Test_4_ChainExtended.drawio.txt

TL:DR - Is it possible to programmatically add connector lines in draw.io via xml file?