Invisible Skull

The skull block is still invisible, even after creating the tile.

PHP:

public function onDeath(Death $event){
        $player = $event->getEntity();

        if($player instanceof Player){
            $head = Block::get(Block::SKULL_BLOCK);
            $x = $player->x;
            $y = $player->y;
            $z = $player->z;
            $nbt = new CompoundTag("", [
                new ListTag("Items", []),
                new StringTag("id", Tile::SKULL),
                new IntTag("x", $x),
                new IntTag("y", $y+1),
                new IntTag("z", $z)
            ]);
            $nbt->Items->setTagType(NBT::TAG_Compound);
            Level::
            $tile = Tile::createTile("Skull", $player->getLevel()->getChunk($x >> 4, $z >> 4), $nbt);
            $level = $player->getLevel();
            $level->setBlock(new Vector3($x, $y+1, $z), $head);
             }

What's the point of creating a tile but not using it?

PHP:

$level->addTile($tile);


PHP:

$nbt->Items->setTagType(NBT::TAG_Compound);
Level::
$tile = Tile::createTile("Skull", $player->getLevel()->getChunk($x >> 4, $z >> 4), $nbt);

Remove Level:: and do what @Legoboy0215 said.

Tried this, got an error message about $Rot :/
Main:

PHP:

$x = $player->x;
            $y = $player->y;
            $z = $player->z;
            $nbt = new CompoundTag("", [
                new ListTag("Items", []),
                new StringTag("id", Tile::SKULL),
                new IntTag("x", $x),
                new IntTag("y", $y+1),
                new IntTag("z", $z)
            ]);
            $nbt->Items->setTagType(NBT::TAG_Compound);
            $tile = Tile::createTile("Skull", $player->getLevel()->getChunk($x >> 4, $z >> 4), $nbt);
            $level = $player->getLevel();
            $level->addTile($tile);
            $level->setBlock(new Vector3($x, $y, $z), $block);
            $level->setBlock(new Vector3($x, $y+1, $z), $head);

https://github.com/iTXTech/Genisys/blob/master/src/pocketmine/block/SkullBlock.php#L71-L101
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