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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
1.20
Structurize Version
1.20.1-1.0.816
Related Mods and their Versions
Forge 47.4.0
Minecolonies 1.20.1-1.1.1240
Problem description
I am showing a few errors in my server console for child huts, saying that the level 0 blueprint is not available. But we're specifically told not to include the level 0 huts in the schematic pack. Is this a change, or has something been overlooked, and these errors should not happen?
Add a thumbs-up to the bug report if you are also affected. This helps the bug report become more visible to the team and doesn't clutter the comments.
Add a comment if you have any insights or background information that isn't already part of the conversation.
Honestly wasn't sure to add this here as well or make a separate issue....
My console is also complaining that the tags are missing from the gatehouse "welcomecenter1" - But (1) I know for a fact the tags are there, and (2) The current building is "welcomecenter2".
Seems Structurize is doing some weird things in reading schematics.
[07:42:07] [Structurize IO Worker #0/ERROR] [structurize/]: Error loading blueprint: Medieval Spruce:blueprints/minecolonies/medievalspruce/military/altbarrackstower0.blueprint java.io.FileNotFoundException: null at java.util.Optional.orElseThrow(Optional.java:403) ~[?:?] {re:mixin} at cpw.mods.niofs.union.UnionFileSystem.newReadByteChannel(UnionFileSystem.java:340) ~[securejarhandler-2.1.10.jar:?] {} at cpw.mods.niofs.union.UnionFileSystemProvider.newByteChannel(UnionFileSystemProvider.java:149) ~[securejarhandler-2.1.10.jar:?] {} at java.nio.file.Files.newByteChannel(Files.java:380) ~[?:?] {re:mixin} at java.nio.file.Files.newByteChannel(Files.java:432) ~[?:?] {re:mixin} at java.nio.file.Files.readAllBytes(Files.java:3288) ~[?:?] {re:mixin} at com.ldtteam.structurize.storage.StructurePacks.getBlueprint(StructurePacks.java:428) ~[structurize-1.20.1-1.0.818.jar%23568!/:1.20.1-1.0.818] {re:classloading} at com.ldtteam.structurize.storage.StructurePacks.getBlueprint(StructurePacks.java:414) ~[structurize-1.20.1-1.0.818.jar%23568!/:1.20.1-1.0.818] {re:classloading} at com.ldtteam.structurize.storage.StructurePacks.getBlueprint(StructurePacks.java:253) ~[structurize-1.20.1-1.0.818.jar%23568!/:1.20.1-1.0.818] {re:classloading} at com.ldtteam.structurize.storage.StructurePacks.lambda$getBlueprintFuture$0(StructurePacks.java:149) ~[structurize-1.20.1-1.0.818.jar%23568!/:1.20.1-1.0.818] {re:classloading} at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768) ~[?:?] {} at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?] {} at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?] {} at java.lang.Thread.run(Thread.java:840) ~[?:?] {re:mixin}
Activity
AnyankaT commentedon Jun 20, 2026
Honestly wasn't sure to add this here as well or make a separate issue....
My console is also complaining that the tags are missing from the gatehouse "welcomecenter1" - But (1) I know for a fact the tags are there, and (2) The current building is "welcomecenter2".
Seems Structurize is doing some weird things in reading schematics.
latest (16).log
Sandriell commentedon Aug 17, 2026
Similar here with Medieval Spruce Barracks Tower.
[07:42:07] [Structurize IO Worker #0/ERROR] [structurize/]: Error loading blueprint: Medieval Spruce:blueprints/minecolonies/medievalspruce/military/altbarrackstower0.blueprint java.io.FileNotFoundException: null at java.util.Optional.orElseThrow(Optional.java:403) ~[?:?] {re:mixin} at cpw.mods.niofs.union.UnionFileSystem.newReadByteChannel(UnionFileSystem.java:340) ~[securejarhandler-2.1.10.jar:?] {} at cpw.mods.niofs.union.UnionFileSystemProvider.newByteChannel(UnionFileSystemProvider.java:149) ~[securejarhandler-2.1.10.jar:?] {} at java.nio.file.Files.newByteChannel(Files.java:380) ~[?:?] {re:mixin} at java.nio.file.Files.newByteChannel(Files.java:432) ~[?:?] {re:mixin} at java.nio.file.Files.readAllBytes(Files.java:3288) ~[?:?] {re:mixin} at com.ldtteam.structurize.storage.StructurePacks.getBlueprint(StructurePacks.java:428) ~[structurize-1.20.1-1.0.818.jar%23568!/:1.20.1-1.0.818] {re:classloading} at com.ldtteam.structurize.storage.StructurePacks.getBlueprint(StructurePacks.java:414) ~[structurize-1.20.1-1.0.818.jar%23568!/:1.20.1-1.0.818] {re:classloading} at com.ldtteam.structurize.storage.StructurePacks.getBlueprint(StructurePacks.java:253) ~[structurize-1.20.1-1.0.818.jar%23568!/:1.20.1-1.0.818] {re:classloading} at com.ldtteam.structurize.storage.StructurePacks.lambda$getBlueprintFuture$0(StructurePacks.java:149) ~[structurize-1.20.1-1.0.818.jar%23568!/:1.20.1-1.0.818] {re:classloading} at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768) ~[?:?] {} at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?] {} at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?] {} at java.lang.Thread.run(Thread.java:840) ~[?:?] {re:mixin}kezmodius commentedon Aug 20, 2026
Server log: https://gist.github.com/kezmodius/5656ad81ff74d253c54eb7a28fe3ef90
This is occurring constantly now, for multiple styles. This log alone has Steampunk, Old English, Aquatica, Lunara Colonies and Ancient Athens. If it is not a big deal, can it do less logging?