Fabric 1.21.1
Villager Coin 1.0.8

The new update prevents client startup, this one is kind of important.

---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!
Time: 2025-05-27 17:19:58
Description: Initializing game
java.lang.RuntimeException: Could not execute entrypoint stage 'main' due to errors, provided by 'biomeswevegone' at 'net.potionstudios.biomeswevegone.fabric.BiomesWeveGoneFabric'!
at net.fabricmc.loader.impl.FabricLoaderImpl.lambda$invokeEntrypoints$2(FabricLoaderImpl.java:403)
at net.fabricmc.loader.impl.util.ExceptionUtil.gatherExceptions(ExceptionUtil.java:33)
at net.fabricmc.loader.impl.FabricLoaderImpl.invokeEntrypoints(FabricLoaderImpl.java:401)
at net.fabricmc.loader.impl.game.minecraft.Hooks.startClient(Hooks.java:52)
at knot//net.minecraft.class_310.(class_310.java:477)
at knot//net.minecraft.client.main.Main.main(Main.java:239)
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:480)
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74)
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
Suppressed: java.lang.NoClassDefFoundError: Could not initialize class me.villagerunknown.villagercoin.item.CoinItems
at knot//me.villagerunknown.villagercoin.feature.CoinFeature.execute(CoinFeature.java:72)
at knot//me.villagerunknown.platform.manager.featureManager.lambda$loadFeatures$0(featureManager.java:59)
at java.base/java.util.TreeMap.forEach(TreeMap.java:1317)
at knot//me.villagerunknown.platform.manager.featureManager.loadFeatures(featureManager.java:58)
at knot//me.villagerunknown.luckycoins.Luckycoins.onInitialize(Luckycoins.java:29)
at net.fabricmc.loader.impl.FabricLoaderImpl.invokeEntrypoints(FabricLoaderImpl.java:399)
... 6 more
Caused by: java.lang.ExceptionInInitializerError: Exception java.lang.ExceptionInInitializerError [in thread "Render thread"]
at knot//me.villagerunknown.villagercoin.item.CoinItems.(CoinItems.java:22)
at knot//me.villagerunknown.villagercoin.feature.MerchantCoinTradingFeature.getCoinForTrade(MerchantCoinTradingFeature.java:30)
at knot//net.minecraft.class_1914.handler$onh000$villagerunknown-villagercoin$TradeOffer(class_1914.java:2048)
at knot//net.minecraft.class_1914.(class_1914.java:51)
at knot//net.minecraft.class_1914.(class_1914.java:66)
at knot//net.minecraft.class_1914.(class_1914.java:62)
at knot//net.minecraft.class_1914.(class_1914.java:58)
at knot//net.minecraft.class_1914.(class_1914.java:54)
at knot//net.potionstudios.biomeswevegone.world.entity.npc.BWGVillagerTrades.createEmeraldForItemsOffer(BWGVillagerTrades.java:109)
at knot//net.potionstudios.biomeswevegone.world.entity.npc.BWGVillagerTrades.makeTrades(BWGVillagerTrades.java:34)
at knot//net.potionstudios.biomeswevegone.fabric.VanillaCompatFabric.registerTrades(VanillaCompatFabric.java:72)
at knot//net.potionstudios.biomeswevegone.fabric.VanillaCompatFabric.init(VanillaCompatFabric.java:41)
at knot//net.potionstudios.biomeswevegone.fabric.BiomesWeveGoneFabric.initializeBiomesWeveGone(BiomesWeveGoneFabric.java:37)
at knot//net.potionstudios.biomeswevegone.fabric.BiomesWeveGoneFabric.onInitialize(BiomesWeveGoneFabric.java:25)
... 7 more
Caused by: java.lang.ExceptionInInitializerError
at knot//me.villagerunknown.villagercoin.item.CoinItems.(CoinItems.java:22)
at knot//me.villagerunknown.villagercoin.feature.MerchantCoinTradingFeature.getCoinForTrade(MerchantCoinTradingFeature.java:30)
at knot//net.minecraft.class_1914.handler$onh000$villagerunknown-villagercoin$TradeOffer(class_1914.java:2048)
at knot//net.minecraft.class_1914.(class_1914.java:51)
at knot//net.minecraft.class_1914.(class_1914.java:66)
at knot//net.minecraft.class_1914.(class_1914.java:62)
at knot//net.minecraft.class_1914.(class_1914.java:58)
at knot//net.minecraft.class_1914.(class_1914.java:54)
at knot//net.potionstudios.biomeswevegone.world.entity.npc.BWGVillagerTrades.createEmeraldForItemsOffer(BWGVillagerTrades.java:109)
at knot//net.potionstudios.biomeswevegone.world.entity.npc.BWGVillagerTrades.makeTrades(BWGVillagerTrades.java:34)

I'll have to test this but just to be sure, do you have the latest version of my Platform mod installed?

Also, is Biomes We've Gone the same as Oh The Biomes We've Gone? Could you provide a link, please?

I'm pretty sure, I updated all of the mods through modrinth. and no it's a little different it's a sequel mod

https://modrinth.com/mod/oh-the-biomes-weve-gone

Thanks for the extra information. I have a fix in place and I'm just double checking things before publishing it. The fix will be in my Platform mod, so keep an eye out for that update.