Hi Alexander,
I moved To new version 26.5 and here my results:
Please see:
Test data(input/output/QGIS)
5175 GeoJson GeoPackage.zip (48.3 KB)
Thanks,...GIS may create a layer without one, which MyGeoData treats as invalid...ensure that: A crs object is present (e.g., EPSG:4326). All geometries...