AssertionError: "Expecting edges to be visited only once"

Hello! I am new to blender but not new to 3D software.

I am experiencing an issue where when I select all my objects and click "Flatten to SVG Outline" I get this error:

AssertionError: "Expecting edges to be visited only once"

And no SVG file gets created.

This is what my settings look like, plus the info log is visible as well.

There is a high chance that something is wrong on my end. I will continue to test things out and will update if I find a solution.

Thank you!