# Common Issues - `Error: connect ECONNREFUSED`: Minecraft refused to connect with mindcraft program. Most likely due to: - you have not opened your game to LAN in game settings - your LAN port is incorrect, make sure the one you enter in game is the same as specified in `settings.js` - you have the wrong version of minecraft, make sure your MC version is the same as specified in `settings.js` - `ERR_MODULE_NOT_FOUND`: You are missing an npm package. run `npm install` - Many issues are caused by out-of-date node module patches, especially after updates. A catch-all is to delete the `node_modules` folder, and run `npm install` - **`npm install` fails with Python or C++ build errors**: This typically happens when building native modules like `gl`. Common solutions: - **Python not found** (macOS/Linux): If you see `python: command not found`, create a symlink: `sudo ln -s $(which python3) /usr/local/bin/python` - **C++20 errors or Node version issues**: If you see `"C++20 or later required"` errors, you're likely using Node v24 or newer. The `gl` package requires Node LTS (v18 or v20). Switch versions using: ```bash nvm install 20 nvm use 20 rm -rf node_modules package-lock.json npm install ``` - **Skip optional packages**: If you don't need the vision feature (disabled by default), you can skip the problematic `gl` package: `npm install --no-optional` - `My brain disconnected, try again`: Something is wrong with the LLM api. You may have the wrong API key, exceeded your rate limits, or other. Check the program outputs for more details. - `I'm stuck!` or other issues with constantly getting stuck: - Mineflayer's pathfinder is imperfect. We have improved upon it with patches, but these might not have been applied properly. Make sure your code is up to date with main, delete the `node_modules` folder, and run `npm install` - The bot will still get stuck occasionally, but not constantly. - `Why I added the api key but still prompted that the key can't be found?` - Possible reason 1: Did not modify keys.example.json to keys.json. - Possible reason 2: If you use vscode to edit, you need to `ctrl+s` to save the file for the changes to take effect. - Possible reason 3: Not setting the code path correctly in setting.js, use andy.js by default. # Common Questions - Mod Support? Mindcraft only supports client-side mods like optifine and sodium, though they can be tricky to set up. Mods that change minecraft game mechanics are not supported. - Texture Packs? Apparently these cause issues and refuse to connect. Not sure why - Baritone? Baritone is a mod that is completely different from mineflayer. There is currently no easy way to integrate the two programs.