I'm playing the Farming Valley modpack, and whenever I place the dog bed I bought, the texture is missing. Not sure if it has anything to do with the fact that it's in a modpack but when I put my mouse over the dog bed in inventory, it says "dogBed.woodError" and "dogBed.woolError", any way to fix this?
I'm playing minecraft version 1.10.2
forge version 12.18.3.2511
and DoggyTalents version 1.14.2.314

The 1.10.2 versions of the mod aren't recieving anymore updates. However, as far as your issue, I would go and slowly add in mods from the modpack one at a time just to see what specific mod is causing the issue

The only time this should occur is if you created a dog bed with planks from another mod and then removed that mod. Have you done this? (Mods supported are Forestry, extra trees, botania, natura, terraqueous, dendrology & biomesoplenty) You say you bought it so are you getting the bed from somewhere else than crafting?

Just loaded up 1.10.2 and beds seem fine.

If I would have to guess it is due to the mod packs implementation of this feature to buy the beds. They need to add NBT to the stack to specify the type of casing and bedding it has.