Coriin

I trying to add block, but in line: public static final RegistryObject<Block> Colorium_Block = registerBlock("colorium_block",() -> new Block(AbstractBlock.Properties.of(Material.ROCK).harvestLevel(2).harvestTool(ToolType.PICKAXE).setRequiersTool().hardnessAndResistence(5f))); i have error cannot find symbol variable ROCK