Schematic with invalid blockentity data

Is there an existing issue for this?

• I have searched the existing issues.

Are you using the latest Structurize Version?

• I am running the latest beta/release version of Structurize for my Minecraft version.
  I am also running the latest versions of other mods that are part of my problem.

Did you check on the Wiki? or ask on Discord?

• I checked the MineColonies/Structurize Wiki or I asked on discord.

Minecraft Version

1.21

Structurize Version

1.0.832-1.21.1

MineColonies Version (if related bug)

1.1.1374-1.21.1

Related Mods and their Versions

Error showed up on both Wolfcraft server and clean instance.

Current Behavior

[19Aug2026 20:14:04.860] [Server thread/WARN] [minecolonies/]: Schematic with invalid blockentity data for block:Block{minecraft:dark_oak_log}[axis=y] in pack:Medieval Dark Oak schematic:minerx2top.blueprint blockentitydata:{}

I posted this line from our console log in discord today. Moobien asked me to test in a clean instance. It showed up there too, with even more named schematics.

Discord convo: https://discord.com/channels/139070364159311872/724810039281451028/1539921090405732433

He checked and posted these:

Expected Behavior

Not to do that? I don't even understand what's happening.

Reproduction Steps

To test I made a basic instance,
Found a Medieval Dark Oak abandoned village and claimed it,
Pasted in a level one mine and house and let a citizen spawn.
Checked the logs once they reached the shaft bottom and started digging outwards.
Profit.

Logs

https://gist.github.com/kezmodius/46e4b72a04f23fee0d25fe95176e9cdd

Anything else?

Train said:
It seems to be a log, which somehow got NBT data
Not sure whether it is the tag anchor, if so, this is indeed a bug. It feels like it tries to apply the empty NBT in “entity” to a block which doesn’t have NBT (not sure whether entity should have been omitted, or whether it should not have tried applying it)

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No source file or test is named. Reproduce the warning using the Medieval Dark Oak abandoned village, the level-one mine and house, and a clean instance; inspect the linked gist and schematic block-entity data. Done means the invalid block-entity warning no longer occurs for the affected schematics without introducing new errors.