Hello,

 

I've switched from a working world in 1.18.1 to 1.18.2 Forge I've gone through and picked out the 1.18.2 versions of each mod I use in my custom pack. 

Though when I go to load the world I get an error "Errors in currently selected datapacks prevented the world from loading. You can either try to load it with only the vanilla data pack ("safe mode") or go back to the title screen to manually fix it"

clicking safe mode does nothing. This error also occurs in previously made vanilla only worlds. 

I'm not sure what to do I put a ton of hours into my previous world, the only reason I updated in the first place was to use the new create mod, this is pretty much my last ditch effort before giving up.

Here is a link to the Zip File Containing Mods and Debug Log.

I'd like to save my world if possible.

 

Thank you,

Queen

Quote

[30Jul2022 13:39:35.201] [Render thread/ERROR] [net.minecraft.world.level.storage.LevelStorageSource/]: Exception reading C:\Users\Luke\AppData\Roaming\.minecraft\saves\ForgeWorld_0_18_1\level.dat_old
java.util.NoSuchElementException: No value present
        at java.util.Optional.orElseThrow(Optional.java:377) ~[?:?]
        at net.minecraft.util.datafix.fixes.StructureSettingsFlattenFix.m_204014_(StructureSettingsFlattenFix.java:27) ~[client-1.18.2-20220404.173914-srg.jar%23117!/:?]
        at com.mojang.datafixers.Typed.lambda$updateTyped$6(Typed.java:127) ~[datafixerupper-4.1.27.jar%2334!/:?]
        at com.mojang.datafixers.Typed.lambda$updateCap$9(Typed.java:164) ~[datafixerupper-4.1.27.jar%2334!/:?]
        at com.mojang.datafixers.optics.Traversal$Instance$1.lambda$wander$0(Traversal.java:34) ~[datafixerupper-4.1.27.jar%2334!/:?]
 

Your issue is that Mojang changed the format for saving world gen structures within world saves in 1.18.2

This was to make structures more configurable in datapacks.

While they have a way of updating vanilla structures, it can't fix modded structures - before 1.18.2 there was no standard format for this data.

 

The only thing I can suggest is to talk the mod authors for the world gen mods that you have.

They may know a way to fix the data?

8 hours ago, warjort said:

Your issue is that Mojang changed the format for saving world gen structures within world saves in 1.18.2

This was to make structures more configurable in datapacks.

While they have a way of updating vanilla structures, it can't fix modded structures - before 1.18.2 there was no standard format for this data.

 

The only thing I can suggest is to talk the mod authors for the world gen mods that you have.

They may know a way to fix the data?

Thank you, is there a way to know which mods are causing this issue? I'm not entirely sure which mods Generate structures :(

Use the /locate command it will list all structures in the autocompletion. The part before the : is the mod name.

11 hours ago, warjort said:

Use the /locate command it will list all structures in the autocompletion. The part before the : is the mod name.

What if I'm unable to load any old or new world 😅? 

Please post debug.log from the logs folder when you try to load a new World.

1 hour ago, Luis_ST said:

Please post debug.log from the logs folder when you try to load a new World.

I did... Its in the file in my first post. I will make it separate for you though.

Debug.Log Download

56 minutes ago, diesieben07 said:

Refer to the Optifine downloads page regarding compatibility with Forge.

You are wonderful! I removed the Optifine mod and it works perfectly!

Edited July 31, 20223 yr by SaveZeQueen