Network Protocol Error | BisectHosting.com | Page 1

cursive galleon Jan 8, 2026, 3:34 PM

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Hello, I currently have a Minecraft Java server running the Dungeon Heroes modpack. I have one user that has been having consistent problems connecting. It's always a Network Protocol Error and the logs always show an exception being thrown with regards to parsing recipes. Only this user is getting this error as well. Could anyone point us to any possible solutions for this?

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I should add that these errors only appear on this user specifically. The user was able to play for a couple of hours with us before this error began happening and they could no longer play on the server.

forest dawn Jan 8, 2026, 3:42 PM

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Hey there Radioactive, I am so sorry this is happening. from the snippet of logs there it looks like the user is having an issue rendering a recipe on their client side. I would recommend seeing if they could reinstall the modpack on thier client to see if that helps out.

cursive galleon Jan 8, 2026, 3:43 PM

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yeah we've done a modpack reinstall, same error sadly

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here is a full log

📎 2026-01-08-1.log.gz

chrome raven Jan 8, 2026, 3:45 PM

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cursive galleon Hello, I currently have a Minecraft Java server running the Dungeon Heroes modpa...

Hey, could you please share the entire log file, some errors might just be cascading (one error causes something to fail causing another error). Providing us with the full log file is easier to see

chrome raven Jan 8, 2026, 3:45 PM

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cursive galleon here is a full log

could you please share the latest.log file itself, and not these gzipped archives please?

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it's in the same folder but just scroll down more

cursive galleon Jan 8, 2026, 3:48 PM

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📎 latest.log

chrome raven Jan 8, 2026, 3:50 PM

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the actual error seems to be java.lang.IllegalStateException: Invalid entity data item type for field 20 on entity MaulerEntity['Mauler'/6709, l='ClientLevel', x=4095.90, y=127.00, z=-1395.55]: old=0(class java.lang.Integer), new=savanna(class java.lang.String) at knot/net.minecraft.class_2945.method_12785(class_2945.java:126) ~[client-intermediary.jar:?]

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the rest is because the client is disconnecting as it's loading causing the rest to error out as you've suddenly disconnected

cursive galleon Jan 8, 2026, 3:51 PM

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oh yeah the user did disconnect while in range of that entity

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or that's when it started happening

chrome raven Jan 8, 2026, 3:51 PM

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so what it rather seems to be is an invalid entity in the world that's causing an error and disconnect as it loads in

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so that entity needs to be deleted as that's causing the issues

cursive galleon Jan 8, 2026, 3:52 PM

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I see, how would I go about deleting that entity?

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odd thing is we all saw this entity, so only this user got this error

chrome raven Jan 8, 2026, 3:53 PM

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well if others can get close without issues, they could just delete it by getting near and running a /kill command on it

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but if others are also getting issues when it loads, that's gonna be more difficult

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there might be mods that could delete it when it errors out, but I'm not sure about what that mod might be. The only way I can think of is stopping the server, finding the region file the entity is in and trying to delete it manually from the world files

cursive galleon Jan 8, 2026, 3:58 PM

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I tped to its location and killed it no problem, we'll attempt to have them reconnect in a bit

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it worked! thank you so much

cursive galleon Jan 8, 2026, 4:27 PM

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just to update, killing that specific entity did allow them to log in, however another instance of that specific entity caused it again

#Network Protocol Error