Forge version: Minecraft 1.16.5 Forge 36.0.43
Twilight Forest version: 4.0.xxx
Link to error log: https://gist.github.com/GhastCreepypasta/c40679d418bad993a048c9f3ef88b9a2

fixed as many of these as I could, the only ones that are left are about the keepsake casket, door item models, and transwood door and trapdoor. Cant currently fix those ones due to missing textures, so I'm closing this issue now. Thanks for reporting :D