Hi Alexander,
1.Here are the errors:
[gpx4] Testing Gpx → GeoPackage
Args: input=‘D:\GisConverter\Tests\Gpx\Input\airports.gml’, format=‘GeoPackage’, output=‘D:\GisConverter\Tests\Gpx\Output\2026-04-16_16-34-00\gpx4\Ge…...MB) Here is no Gpx file, only list of Gml files. I guess was added...