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Forge and Data Packs incompatible.


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Played on forge-1.13.2-25.0.54. If I play a world without any datapacks, forge doesn't crash, but when i play a world with datapacks it crashes and gives this crash report:


---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.

Time: 2/25/19 1:42 PM
Description: Exception in server tick loop

java.lang.IllegalStateException: Cannot build unresolved tag entry
    at net.minecraft.tags.Tag$TagEntry.func_200162_a(Tag.java:226)
    at net.minecraft.tags.Tag.<init>(Tag.java:37)
    at net.minecraft.tags.Tag$Builder.func_200051_a(Tag.java:131)
    at net.minecraft.tags.TagCollection.func_199909_a(SourceFile:135)
    at net.minecraft.advancements.FunctionManager.func_195410_a(SourceFile:158)
    at net.minecraft.resources.SimpleReloadableResourceManager.func_199010_c(SimpleReloadableResourceManager.java:125)
    at net.minecraft.resources.SimpleReloadableResourceManager.func_199005_a(SimpleReloadableResourceManager.java:101)
    at net.minecraft.server.MinecraftServer.func_195568_a(MinecraftServer.java:1378)
    at net.minecraft.server.MinecraftServer.func_195560_a(MinecraftServer.java:375)
    at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:75)
    at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:95)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:549)
    at java.lang.Thread.run(Thread.java:745)

A detailed walkthrough of the error, its code path and all known details is as follows:

-- System Details --
    Minecraft Version: 1.13.2
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_51, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 301689232 bytes (287 MB) / 939524096 bytes (896 MB) up to 2147483648 bytes (2048 MB)
    JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
    FML: New FML!
    Loaded coremods (and transformers): Nothing
    Profiler Position: N/A (disabled)
    Player Count: 0 / 8; []
    Data Packs: mod:forge, vanilla, file/custom_recipe (incompatible), file/customizable armor stands (incompatible), file/dragon drops elytra (incompatible), file/more mob heads (incompatible), file/universal dyeing (incompatible), file/double shulker shells (incompatible), file/our_heads (incompatible), file/lost_villagers (incompatible)
    Type: Integrated Server (map_client.txt)
    Is Modded: Definitely; Client brand changed to 'forge'


HERES THE LINK TO THE WORLD WITH DATAPACKS: http://www.mediafire.com/file/yb8bcxfi7r950qo/Redstone_Testing2.zip/file

Edited by carterray31001
added world
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  • 4 weeks later...

Here's a temporary fix: remove the datapacks from the world, load up the world, and then put the datapacks back in the datapacks/ folder and then reload them.

To reload them, you type "/reload". If you're in singleplayer, you'll need to go to the escape menu, click on "Open to LAN", and make sure "Enable Cheats" is on. Then press "Start World" or something similar, and then type "/reload".


I think this issue has something to do with the fact that forge mods are listed when you type "/datapack list".

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Provide your datapacks/world for testing. And before you say ANY data pack does this, no it's not any datapack. So please provide your specific data pack.

I do Forge for free, however the servers to run it arn't free, so anything is appreciated.
Consider supporting the team on Patreon

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The datapacks are listed in the crash report, and they all came out as incompatible in the crash report. Most are from xisumavoid.com and one or two are ones that I made myself. “Our heads” is just a function to summon a villager that has custom heads. Again, all the datapacks list as incompable 

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