Without this exact layer of compatibility, performance-boosting mods, custom UI tweaks, and world-generation expansions fail to register properly, resulting in immediate desktop crashes during the game initialization phase. How to Update to Fabric API 0.43.1
Remove all mods from your folder, then add them back five at a time to isolate the broken mod. Ensure your Fabric API version matches the loader. Missing Dependencies Profile fabric version 0431 upd
