Jump to content

Internal Exception: io.netty.handler.codec.DecoderException: java.lang.IndexOutOfBoundsException: Error on my server

Recommended Posts

Hi ! I have this error message when I try to connect to my own forge 1.19.2 server. The server is hosted on my computer, my frined can join but I can't.


"Internal Exception: io.netty.handler.codec.DecoderException: java.lang.IndexOutOfBoundsException: readerIndex(28270) + length(1) exceeds writerIndex(28270): PooledUnsafeDirectByteBuf(ridx: 28270, widx: 28270, cap: 28270)"

Here is an extract of my debug.log.

Hope you can help me.

Link to comment
Share on other sites

The log you posted is incomplete and not the required debug.log.

Read the FAQ at the top of the forum.


The actual error you show is a network protocol error.

This is usually caused by mods that were not test in multiplayer by the mod author or are mods for a different version of minecraft/forge with different network formats.

Since you say it only happens for people with OP, the issue is likely related to a mod that has custom commands?


Usually the only way the find the problem mod is to experiment with removing mods until the issue goes away.

Backup your world before removing mods.



Edited by warjort


If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.