When starting up the game with this mod installed, it reports that "base/sound/car-metal-impact.ogg" cannot be found. It's happening due to 3 locations in the data.lua file that reference that sound file, which no longer exists in Factorio 2.0
All you need to do is replace that with "base/sound/car-metal-impact-1.ogg", or one of the other new metal impact sounds. This error doesn't happen in your other Zombie Horde mod, so I'm guessing that you simply forgot to update those references for this one.
