Troubleshooting · Server setup · Prominence II: Hasturian Era
Fix: missing datapacks (OpenLoader)
If your server refuses to start (or a world won’t load) and the log says datapacks are missing, it usually means something in the server pack wasn’t installed correctly — often files under openloader/ or config/.
Fix steps
- Stop the server.
- Back up your world folder.
- Re-install the official server pack for the exact modpack version you’re running.
- Compare your server folder with the fresh server pack, especially:
openloader/config/mods/
- Don’t “update a single mod” to fix it — restore the whole pack.
Why this happens
Some modpacks ship required datapacks and config-driven content. If a hosting panel “updates” only the jar/mods but not the accompanying folders, the server can’t find required content and fails to load.