MC 1.12.2 modelloading error for AIR block with custom slabs

I have a small model loading error. In my classes i have a method like this:

    @Override
    public void registerModels() {

		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 0, "color=silver,half=bottom");
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 1, "color=cyan,half=bottom");
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 2, "color=purple,half=bottom");
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 3, "color=blue,half=bottom");
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 4, "color=brown,half=bottom");
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 5, "color=green,half=bottom");
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 6, "color=red,half=bottom");
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 7, "color=black,half=bottom");
	
	}

This method is inside my slab class. There are no problem with any other blocks where i register the renders like this.

In the console i see that the game tries to loading a item model for minecraft:air with those variants.

Why is that on how do i fix it?

If i replace "this" with "BlockInit.TERRACOTTA_SLABS_HALF_A" , then it doesn't give any errors.

EDIT:

ah nvm i see what i forgot. Changed it to:

    @Override
    public void registerModels() {

    	if (!isDouble()) {
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 0, "color=silver,half=bottom");
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 1, "color=cyan,half=bottom");
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 2, "color=purple,half=bottom");
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 3, "color=blue,half=bottom");
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 4, "color=brown,half=bottom");
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 5, "color=green,half=bottom");
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 6, "color=red,half=bottom");
		Main.proxy.registerItemRenderer(Item.getItemFromBlock(this), 7, "color=black,half=bottom");
    	}
	}

Edited March 2, 20187 yr by winnetrie