Imagine launching your custom Minecraft mod, only for the console to explode with "Loaded Config Before Value Config Get Cannot IllegalStateException". ๐ฉ As a passionate game dev or modder, this Minecraft Error hits hard during setup sequences. But don't worryโthousands of modders face this Java beast in Forge or Fabric. Stick around, and you'll fix it in minutes, plus learn pro tips to avoid it forever. Let's dive in!
What is the Loaded Config Before Value Config Get Cannot IllegalStateException Minecraft Error?
This IllegalStateException from Java's lang package screams when your mod tries to fetch a config value before the config fully loads. In Minecraft modding, configs handle settings like mob spawns or block behaviors. During setup sequences (e.g., FMLCommonSetupEvent or Fabric's init phases), accessing config.getValue() too early triggers:
java.lang.IllegalStateException: Cannot get value from config before it is loaded!
at net.minecraftforge.fml.config.ConfigTracker...
It's common in 1.20+ versions with Forge 1.20.1/1.21 or Fabric 0.92+. Why? Mod lifecycle demands configs load after registration but before full setup.
Root Causes: Why Your Setup Sequences Fail
- 1๏ธโฃ Early Access in Constructors: Grabbing config in mod constructor or registry eventsโconfigs aren't loaded yet.
- 2๏ธโฃ Wrong Event Order: Using
FMLCommonSetupEvent or Initialize before ConfigLoading.
- 3๏ธโฃ Static Initialization: Static fields pulling config values at class load time.
- 4๏ธโฃ Nested Mod Conflicts: Dependency mods load configs out-of-sync.
Pro tip: Check logs for "Config loaded before value get"โit's your smoking gun.
๐ง Step-by-Step Fix for Loaded Config Before Value Config Get IllegalStateException
Ready to banish this error? Follow these exact steps for Forge/Fabric. Tested on latest 1.21.1 patches.
Step 1: Defer Config Access with Events
Move getValue() to post-load events. For Forge:
@Mod("yourmod")
public class YourMod {
public static final String NAME = "YourMod";
@SubscribeEvent
public static void onConfigLoading(final ModConfig.ModConfigEvent event) {
// Safe to load here
}
@SubscribeEvent
public static void setup(final FMLCommonSetupEvent event) {
// NOW safe: ConfigTracker.INSTANCE.getConfig()
int myValue = YourConfig.myValue.get(); // Fixed!
}
}
For Fabric, use ConfigLoadingEvents:
ConfigLoadingEvents.CONFIG_REGISTRY_AND_LOAD.registerModConfig(modId, config -> {
// Load config
});
Step 2: Use Lazy Configs
Wrap values in ConfigValue<Integer> with lazy holders:
public static final ForgeConfigSpec.IntValue MY_VALUE = builder
.defineInRange("my.value", 10, 1, 100);
public static int getMyValue() {
return MY_VALUE.get(); // Auto-handles loading
}
Step 3: Verify Setup Sequences Order
Use this table for Forge/Fabric phase order:
| Phase | Forge Event | Fabric Equivalent | Config Safe? |
| Pre-Init | Constructor | Mod Constructor | โ No |
| Registry | FMLCommonSetupEvent | Registry | โ ๏ธ Sometimes |
| Config Load | ModConfigEvent | CONFIG_REGISTRY_AND_LOAD | โ
Yes |
| Full Setup | FMLLoadCompleteEvent | ServerInit | โ
Yes |
Step 4: Test & Debug
- Run
./gradlew runClientโwatch for errors.
- Add
ConfigTracker.INSTANCE.loadConfigs() manually if needed.
- For multi-mod:
depends in mods.toml.
Voila! Your mod launches smoothly. ๐
Prevention: Pro Tips for Bulletproof Minecraft Mods
- Always use event-driven config accessโnever static init.
- Implement
ConfigChangedEvent for reloads.
- Latest tools: Forge 50.1.0+ or Fabric Loader 0.16.3+ auto-fix some cases.
- Debug with Forge Forums or Fabric Wiki.
Final Thoughts: Level Up Your Modding Game
Mastering the Loaded Config Before Value Config Get Cannot IllegalStateException transforms you from frustrated modder to config wizard. Your Minecraft Error is goneโwhat's next? Experiment with dynamic configs or share your success in comments. Happy modding, legends! ๐ Stay tuned for more setup sequences deep dives.