Michael,
I get the same error when trying to export a vector map to shapefile using
v.out.ogr. I daily build the main branch myself for OSGeo4W v1 (GDAL 3.1.4)
on Windows [1]. It used to work fine before (cannot remember exactly when).
My daily cross-compiled version using GDAL 2.2.4 still works
Using a very recently compiled GRASS 7.9
I imported a gpkg vector area. This went fine AFAICT. It imported into the
correct location. (ETRS89 Zone 30)
I want to export it to shapefile format.
When I try to export it to *any* format, I get the following error:
ERROR 10: Pointer 'hSRS' is NULL