When browsing for Modpacks, editing projects or adding more contents, you might have seen a distinction between Forge and Fabric.In short, these are two different modloaders that help enable Minecraft modding as you know it in the CurseForge app. If you want optifine also then you must download optifabric and put that in the folder as well, and also put the optifine jar in your mods folder as well. While I don't know how to port the mod, what you can do is extract the .jar file into a folder. This error happened since you added an incompatible mod to your projects' modloader, (whether manually or through the app) or updated an existing one to a later version that is incompatible.To fix this, you will need to either update again by clicking the downward arrow icon, or download a previous, compatible version.What are the differences between the Modloaders? No part of this site or its content may be reproduced without the permission of the copyright holder. Click "View Folder" on the bottom-right corner. This library is mostly meant for fuzs_ but other developers are allowed to use it for their own mods if they wish. If you're just using the standard Minecraft Launcher, you can still easily play with mods. With 11 options to choose from, you have plenty of choices to make each new world feel fresh and challenging. This time, go into the folder "configs" and find the files for your conflicting mods. Also there is problems like forge blocking injection attempts or breaking vanilla parts that fabric mods use. Download the Fabric mod loader installer from https://fabricmc.net/use/. We'll also explore the two main mod loaders - Forge and Fabric - and which one you should pick while modding in Minecraft. Move your mod file into it. Select "Loader Mods" from the menu on the left. Drag the Fabric API from the desktop folder to the folder you just opened using MultiMC. Most fuzs_ mods use it, such as Visual Workbench and many others. If there aren't any then you don't have a conflict. We use cookies to make wikiHow great. It contains many abstractions designed to be used on many loaders.