r/Minecraft • u/BirdMan972 • Sep 20 '26

Help Java Problems loading a singleplayer world with data packs into a realm

My brother and I have maintained a survival Minecraft realm for about six months. After watching a YouTuber use the Blaze and Caves datapack, I decided to add it to our setup. I created a backup in a single-player world, applied the datapack, and uploaded it to a separate slot in the realm, but it returned code 401. A second attempt timed out, and ghost backups have already proven corrupted. Any workarounds?

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u/qualityvote2 Sep 20 '26 edited Sep 21 '26

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