How do you update Armory? If the update does not work well from inside Blender with armory add-on, you can also download it from https://armory.itch.io/armory3d
Since the current version of the addon you use is almost two years, the update from inside Blender might not work well. So I suggest simply uninstalling the current armory addon from Blender and re-install the newly downloaded one.
Note that updating Armory itself is not sufficient. You may have to replace old and deprecated logic nodes with new counterparts.