CRASH: Tried to read NBT tag that was too big; tried to allocate: 2097186bytes where max allowed: 2097152

[mkienenb]

Minecolonies version

Unknown. Probably doesn't matter as it affects loading saved games.

On game load, the server shuts down and kicks you back to the launcher:

Error is:

00:41:47    FML Netty Local Client IO #2    error   SimpleChannelHandlerWrapper exception
java.lang.RuntimeException: Tried to read NBT tag that was too big; tried to allocate: 2097186bytes where max allowed: 2097152
    at net.minecraft.nbt.NBTSizeTracker.func_152450_a(NBTSizeTracker.java:25)
[...]
    at net.minecraft.nbt.CompressedStreamTools.func_152456_a(CompressedStreamTools.java:88)
    at net.minecraft.network.PacketBuffer.func_150793_b(PacketBuffer.java:315)
    at net.minecraftforge.fml.common.network.ByteBufUtils.readTag(ByteBufUtils.java:227)
    at com.minecolonies.coremod.colony.ColonyView.handleColonyViewMessage(ColonyView.java:475)
    at com.minecolonies.coremod.colony.ColonyManager.handleColonyViewMessage(ColonyManager.java:991)
    at com.minecolonies.coremod.network.messages.ColonyViewMessage.onMessage(ColonyViewMessage.java:69)
    at com.minecolonies.coremod.network.messages.ColonyViewMessage.onMessage(ColonyViewMessage.java:18)
    at net.minecraftforge.fml.common.network.simpleimpl.SimpleChannelHandlerWrapper.channelRead0(SimpleChannelHandlerWrapper.java:56)

Code is:

```
      public IMessage handleColonyViewMessage(@NotNull final ByteBuf buf, @NotNull final World world, final boolean isNewSubscription)
    {
[...]
      this.requestManager = new StandardRequestManager(this);
        this.requestManager.deserializeNBT(ByteBufUtils.readTag(buf));
        return null;
    }
```

@Raycoms wrote:

> Yeah, we have a few of those timebombs around, basically: A while back we had a bug which created thousand of requests which got basically too big for NBT, so there are a few world with huge colony.dats
> And they probably didn't get the rs reset command yet
> so they have to edit the requests out of the NBT
> 
> We don't have [a] check [for this].
> We should probably add a check to the line this crashes
> and execute the rs reset command there
> to fix up those worlds
> 

[Maescool]

I've got the exact same bug, multiplayer in this case, but on client side, on server side no error, just player connecting and disconnecting

[Maescool]

Bug present in minecolonies-universal-1.12.2-0.8.7582
Fixed in minecolonies-universal-1.12.2-0.8.7637

[Wissi]

Closed as per Maescool reported on Feb 27:
"Bug present in minecolonies-universal-1.12.2-0.8.7582
Fixed in minecolonies-universal-1.12.2-0.8.7637"