[Bug] Mixin Incompatible With Forgified Fabric API

Introduction

In this article, we will discuss a bug that occurs when the Fisherman Villager level up to Master in the game. The bug causes the game to crash and may result in a Ticking Entity error. The error message indicates that there is an issue with the mixin injection, specifically with the TradeOffersTypeAwareBuyForOneEmeraldFactoryMixin from the fabric_object_builder_api_v1 mod.

The Error Message

The error message is as follows:

`Description: Unexpected error

org.spongepowered.asm.mixin.injection.throwables.InjectionError: LVT in net/minecraft/world/entity/npc/VillagerTrades$EmeraldsForVillagerTypeItem::m_213663_(Lnet/minecraft/world/entity/Entity;Lnet/minecraft/util/RandomSource;)Lnet/minecraft/world/item/trading/MerchantOffer; has incompatible changes at opcode 34 in callback fabric-object-builder-v1.mixins.json:TradeOffersTypeAwareBuyForOneEmeraldFactoryMixin from mod fabric_object_builder_api_v1->@Inject::failOnNullItem(Lnet/minecraft/world/entity/Entity;Lnet/minecraft/util/RandomSource;Lorg/spongepowered/asm/mixin/injection/callback/CallbackInfoReturnable;Lnet/minecraft/world/item/ItemStack;)V. Expected: [Lnet/minecraft/world/item/ItemStack;] Found: [Lnet/minecraft/world/item/Item;] Available: [Lnet/minecraft/world/item/Item;, Lnet/minecraft/world/item/ItemStack;] at net.minecraft.world.entity.npc.VillagerTrades$EmeraldsForVillagerTypeItem.handler$dfp000$fabric_object_builder_api_v1$failOnNullItem$missing(VillagerTrades.java)`

The Crash Report

The crash report is available at the following link: crash-2025-03-09_22.18.18-client.txt

The Latest Log

The latest log is available at the following link: latest.log

What is the Issue?

The issue is that the mixin injection is not compatible with the Forgified Fabric API. Specifically, the TradeOffersTypeAwareBuyForOneEmeraldFactoryMixin from the fabric_object_builder_api_v1 mod is causing the issue.

How to Fix the Issue?

To fix the issue, you can try the following:

1. Check the mixin injection: Make sure that the mixin injection is properly configured and that there are no conflicts with other mods.
2. Update the mod: Check if there are any updates available for the fabric_object_builder_api_v1 mod. Updating the mod may resolve the issue.
3. Disable the mixin: Try disabling the mixin to see if it resolves the issue.
4. Ask for help: If none of the above steps resolve the issue, you can ask for help from the Forgified Fabric API team or the Minecraft community.

Conclusion

In conclusion, the bug that occurs when the Fisherman Villager level up to Master is caused by an incompatible mixin injection. To fix the issue, you can try checking the mixin injection, updating the mod, disabling the mixin, or asking for help from the Forgified Fabric API team or the Minecraft community.

Troubleshooting Tips

Here are some additional troubleshooting tips that may help you resolve the issue:

• Check the game logs: Check the game logs for any error messages that may indicate the cause of the issue.
• Check the mod versions: Make sure that all mods are up to date and that there are no conflicts between mods.
• Try a different version of the mod: Try using a different version of the fabric_object_builder_api_v1 mod to see if it resolves the issue.
• Check the mixin configuration: Make sure that the mixin configuration is correct and that there are no conflicts with other mods.

Additional Resources

Here are some additional resources that may help you resolve the issue:

• Forgified Fabric API documentation: Check the Forgified Fabric API documentation for any information on how to resolve the issue.
• Minecraft community forums: Check the Minecraft community forums for any discussions or solutions related to the issue.
• Minecraft wiki: Check the Minecraft wiki for any information on how to resolve the issue.

Conclusion

Introduction

In our previous article, we discussed a bug that occurs when the Fisherman Villager level up to Master in the game. The bug causes the game to crash and may result in a Ticking Entity error. In this article, we will answer some frequently asked questions related to the bug and provide additional information on how to fix it.

Q: What is the cause of the bug?

A: The bug is caused by an incompatible mixin injection. Specifically, the TradeOffersTypeAwareBuyForOneEmeraldFactoryMixin from the fabric_object_builder_api_v1 mod is causing the issue.

Q: How do I fix the bug?

A: To fix the bug, you can try the following:

1. Check the mixin injection: Make sure that the mixin injection is properly configured and that there are no conflicts with other mods.
2. Update the mod: Check if there are any updates available for the fabric_object_builder_api_v1 mod. Updating the mod may resolve the issue.
3. Disable the mixin: Try disabling the mixin to see if it resolves the issue.
4. Ask for help: If none of the above steps resolve the issue, you can ask for help from the Forgified Fabric API team or the Minecraft community.

Q: What are the symptoms of the bug?

A: The symptoms of the bug include:

• The game crashing when the Fisherman Villager level up to Master
• A Ticking Entity error message
• The game logs showing an error message related to the mixin injection

Q: How do I check the mixin injection?

A: To check the mixin injection, you can follow these steps:

1. Open the game logs: Open the game logs to see if there are any error messages related to the mixin injection.
2. Check the mod configuration: Check the mod configuration to see if there are any conflicts with other mods.
3. Check the mixin configuration: Check the mixin configuration to see if it is properly configured.

Q: What are the benefits of updating the mod?

A: Updating the mod may resolve the issue and provide additional features and improvements. Additionally, updating the mod may ensure that you have the latest security patches and bug fixes.

Q: How do I disable the mixin?

A: To disable the mixin, you can follow these steps:

1. Open the game configuration: Open the game configuration to access the mixin settings.
2. Disable the mixin: Disable the mixin by unchecking the box next to it.
3. Save the changes: Save the changes to the game configuration.

Q: What are the next steps if I still experience the bug?

A: If you still experience the bug after trying the above steps, you can try the following:

1. Ask for help: Ask for help from the Forgified Fabric API team or the Minecraft community.
2. Provide more information: Provide more information about the bug, including the game logs and any other relevant details.
3. Try a different version of the mod: Try using a different version of the fabric_object_builder_api_v1 mod to see if it resolves the issue.

Conclusion

In conclusion, the bug that occurs when the Fisherman Villager level up to Master is caused by an incompatible mixin injection. To fix the bug, you can try checking the mixin injection, updating the mod, disabling the mixin, or asking for help from the Forgified Fabric API team or the Minecraft community. We hope that this Q&A article has provided you with the information you need to fix the bug and enjoy playing Minecraft.