GeoPackage tables usually contain only one type of geometry. When creating a GeoPackage table, it can store multiple geometry types. However, if a table is created with a single geometry type, other geometry types cannot be added to it.
When creating driving regions, you can store results in either a new or existing table. If the input GeoPackage table contains only points or lines, an error occurs saving the drive region results to an existing table. Save the results to a new table to avoid this error.