GeometryTypeValidationError

[XUYIRS]

When I adjusted the parameters about median filter or ws in tree_detection function, I often encounter the following issue.

The error occoured in PC.export_tree_crowns(crowntype='crown_poly_smooth').
The content is GeometryTypeValidationError: Record's geometry type does not match collection schema's geometry type: 'LineString' != 'Polygon'

And part of the output file tree_crown_poly_smooth.shp will be missing. I am not sure which parameter is set wrong or not accurate.

If you know the principle, please help me.