Can't upgrade a servo to level 5

Hello,

I'm using the latest patch with all DLCs. I have a servo and I can't enhance it to level 5. When it finishes downloading the upgrade, I get a notification saying that it is ready for an upgrade. The upgrade option doesn't shows up and when I try to check the download progress, nothing happens and no notifications shows up. I tried even doing it on another save, I killed the servo using cheats and spawned a new one, and this always happens, I can't upgrade any servos to level 5. How can I fix this?