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Critical

Failed to load datapacks — Minecraft server won't start

Example error line

Failed to load datapacks, can't proceed with server load
Cause

Minecraft aborts startup because at least one datapack could not be loaded — usually because it is too old or too new for your server version, or one of its files is damaged.

Fix

Open your world's 'datapacks' folder in the file manager and remove the most recently added pack, then restart. The server starts again right away; you can re-add the pack in a version-matching release.

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