Why I can't get ItemType by String on Starting Plugin?

Plugins Plugin Development
1

This is my code.

String id = “minecraft:paper”;

ItemType itemType = ItemTypes.registry().findValue(ResourceKey.resolve(id)).get();

This is error.

org.spongepowered.api.registry.ValueNotFoundException: No ‘minecraft:item’ registry has been defined in root ‘minecraft:root’

Why I can’t get Item Type by String on Starting Plugin ?

Please send me an example code to get ItemType by id on starting plugin.

Please help me.

2

I’ve solved it already!