To everyone having the issue of "Invalid Model" when trying to spawn a modded vehicle.
There's a new issue that some people are having ever since the doomsday heist where if you attempt to install a modded car and spawn it you will get "Invalid Model", The only solution I have found so far is to remove the vehicle from your mods folder and install it in your base game, the other things in your mod folder should still work and you shouldn't have to remove it from your directory either. If that doesn't work then I don't know what to tell you other than there's an issue with your dlclist.xml.
You may still have the issue after the steps above actaully. You have to use the dlcpacks folder that is NOT in your mods folder, and use the dlclist.xml that IS.
and gameconfig aswell
but those of us using steam will have the files overwritten because steam doesnt like modded files and keeps it 100% clean.. even with mods folder, gameconfig, modified dlc list I cant eve get addons to spawn using simple trainer