Unbound values in registry ResourceKey

I have no idea what happened. I was trying to make a village, used a tutorial by "conure" on yt and when making the structure_set files this popped up in the modrinth app log (im playing on performance mods like sodium, nvidium etc.)
java.lang.IllegalStateException: Unbound values in registry ResourceKey[minecraft:root / minecraft:worldgen/structure]: [tnav:vilage_town]
I searched for a lot of time and just gave up. I'm not very good at datapacks and commands. Don't virtually laugh at me if its some stupid beginner class error. Edit: I'm using 1.21.1