I just came back to the game last week, and noticed this happening as well. I complete Impossible Sector, rewards show Starship Scrap, chat log says Starship Scrap, but a red "Invalid Target" pops up as the game tries to load me back into my ship, and there's no scrap in my inventory.
I did a google search for:
"starship scrap" "invalid target"
This was literally the ONLY result that it came back with. Google said to me, "1 result (0.32 seconds)"
Well, at least it was a relevant result!
Would be nice to know if this is a bug that needs to be fixed, or if starship scrap isn't a thing anymore.