Schematics wont spawn at all. Code reveals that no blocks are being placed

I am making a mod focused on exploration, but none of the structures are working at all. I think it has something to do with the new format for importing structures. I took a schematic file and turned it into a .nbt file in order to import it into mcreator. Once imported, everything is fine until I spend 3 hours searching for any of the 8 structures that should be spawning in and not finding any of them. It is not a case of "hey make the spawnrates higher." I can tell you this because I looked at the code. The spawn rates were sticking. The problem is that none of the blocks in the structures are generating. There is nothing about block placements. Anyone else know of a solution or a way to get nbt files without using a converter of some sorts?

Here is the entire code:

package mod.mcreator;

import net.minecraft.world.gen.structure.template.Template;
import net.minecraft.world.gen.structure.template.PlacementSettings;
import net.minecraft.world.WorldServer;
import net.minecraft.world.World;
import net.minecraft.util.math.ChunkPos;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.Rotation;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.Mirror;
import net.minecraft.block.state.IBlockState;
import net.minecraft.block.Block;

import java.util.Random;

public class mcreator_diamondMuseum extends testenvironmentmod.ModElement {

    @Override
    public void generateSurface(World world, Random random, int i2, int k2) {
        if ((random.nextInt(1000000) + 1) <= 7000) {
            int i = i2 + random.nextInt(16) + 8;
            int k = k2 + random.nextInt(16) + 8;
            int height = 255;
            while (height > 0) {
                if (!world.isAirBlock(new BlockPos(i, height, k)))
                    break;
                height--;
            }
            int j = height - 1;
            if (world.isRemote)
                return;
            Template template = ((WorldServer) world).getStructureTemplateManager().getTemplate(world.getMinecraftServer(),
                    new ResourceLocation("testenvironmentmod", "diamondmuseum"));
            if (template == null)
                return;
            BlockPos spawnTo = new BlockPos(i, j, k);
            IBlockState iblockstate = world.getBlockState(spawnTo);
            world.notifyBlockUpdate(spawnTo, iblockstate, iblockstate, 3);
            template.addBlocksToWorldChunk(world, spawnTo,
                    new PlacementSettings().setRotation(Rotation.NONE).setMirror(Mirror.NONE).setChunk((ChunkPos) null)
                            .setReplacedBlock((Block) null).setIgnoreStructureBlock(false).setIgnoreEntities(false));
        }
    }
}