import org.bukkit.Material;
import org.bukkit.Tag;
import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin {

    @Override
    public void onEnable() {
        Tag.STONE_BRICKS.isTagged(Material.IRON_PICKAXE);
    }
}

[18:50:14] [Server thread/ERROR]: Error occurred while enabling SpigotTagTest v0.0.0-SNAPSHOT (Is it up to date?)
java.lang.NullPointerException: Cannot invoke "net.minecraft.world.level.block.Block.q()" because the return value of "org.bukkit.craftbukkit.v1_18_R2.util.CraftMagicNumbers.getBlock(org.bukkit.Material)" is null
        at org.bukkit.craftbukkit.v1_18_R2.tag.CraftBlockTag.isTagged(CraftBlockTag.java:20) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3445-Spigot-fb0dd5f-05a38da]
        at org.bukkit.craftbukkit.v1_18_R2.tag.CraftBlockTag.isTagged(CraftBlockTag.java:1) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3445-Spigot-fb0dd5f-05a38da]
        at net.ttk1.spigottagtest.Main.onEnable(Main.java:12) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:342) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:480) ~[spigot-api-1.18.2-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.craftbukkit.v1_18_R2.CraftServer.enablePlugin(CraftServer.java:517) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3445-Spigot-fb0dd5f-05a38da]
        at org.bukkit.craftbukkit.v1_18_R2.CraftServer.enablePlugins(CraftServer.java:431) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3445-Spigot-fb0dd5f-05a38da]
        at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:614) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3445-Spigot-fb0dd5f-05a38da]
        at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:416) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3445-Spigot-fb0dd5f-05a38da]
        at net.minecraft.server.dedicated.DedicatedServer.e(DedicatedServer.java:263) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3445-Spigot-fb0dd5f-05a38da]
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1013) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3445-Spigot-fb0dd5f-05a38da]
        at net.minecraft.server.MinecraftServer.lambda$0(MinecraftServer.java:306) ~[spigot-1.18.2-R0.1-SNAPSHOT.jar:3445-Spigot-fb0dd5f-05a38da]
        at java.lang.Thread.run(Thread.java:833) [?:?]