[FABRIC]
Almost every single texture is those purple and black blocks

Hello,

This is an incompatibility with « Shetiphian core » (#23 / #14) and thanks to your screenshot I was able to understand why.
I compared the json between obsidian ores and tiles ores which are supposed to be the same.

Adding a "credit" in the json seems to be a problem.

Texture not loading:

{
    "credit": "MineGate - Tous droits réservés.",
    "parent": "block/cube_all",
    "textures":
    {
        "all": "minegate:block/tile_ore"
    }
}

Texture loaded:

{
    "parent": "block/cube_all",
    "textures":
    }
        "all": "minegate:block/obsidian_ore"
    }
}

Now, this kind of addition is not supposed to be a problem.
So I suppose that there is something to change in « Shetiphian core » so that there is no longer a problem with it.

Otherwise it would be necessary to change the files, but manually it may be complicated. (14 276 file to edit.)
Possibly by automating but hey... I think that's not supposed to happen.