How to deny placing of blocks if chunk contains presure plate?

So i got this, in a blockplace event. But it doesn't work:

Code (Text):

        Chunk chunk = e.getBlockPlaced().getLocation().getChunk();
        for(BlockState entity : chunk.getTileEntities()) {
            if(entity instanceof PressurePlate) {
                PressurePlate plate = (PressurePlate)entity;
                    e.setCancelled(true);
                    e.getPlayer().sendMessage("§c§oYou can't build here!");