This is likely due to the new polkitd dropping support for the old pkla (polkit local authority) files. Therefore, the lubuntu desktop seed likely needs polkitd-pkla seeded in order to use those old pkla files to avoid this.
This is likely due to the new polkitd dropping support for the old pkla (polkit local authority) files. Therefore, the lubuntu desktop seed likely needs polkitd-pkla seeded in order to use those old pkla files to avoid this.