mod delets fabric api

[DMCHiggens]

Bug description

2025-06-17.11-51-21.mp4

When i open the game, whether the mc server is open or not (it wasnt in this clip) the game updates the mods folder and deletes fabric and some of automod's other dependencies.
when it has done this, the game refuses to launch.
the only way i can launch my game is by removing automod and adding fabric back in.
i have no idea what is going on or how to fix it, but ive tried using fresh instances on at launcher and it has not fixed the problem. it was working completely fine 20 minutes ago.

Steps to reproduce

1. launch game
2. watch mods folder

Expected behavior

mods folder is untouched

Actual behavior

mods folder is edited

Relevant logs

latest.log

im not sure if the log will help but here it is just incase

Minecraft & Mod Loader versions

1.20.1

Minecraft launcher

atlauncher

Operating system

win 10

AutoModpack version

4.0.0

Other information

No response

Check list

• I have verified that the issue persists in the latest version of the mod.
• I have searched the existing issues and confirmed that this is not a duplicate.
• I have provided all the necessary information to reproduce the issue.
• I have verified that the issue does not occur without the AutoModpack - Ignore if you are reporting a mod conflict issue.

[Skidamek]

This is intended behavior. As you see it removes all the duplicated mods as intended (wiki) it turns them into 1kb dummy files (windows only limitation). And on the next relaunch it should remove all of the 1kb dummy files, but it removes only the fabric api 1kb file... which is odd.

However in the log you provided there isn't anything wrong. Game seems to launch successfully. Could you send more previous logs? Or just leave distant horizons with automodpack alone in the mods folder?

P.S.

and some of automod's other dependencies.

automodpack doesn't have dependecies.

[DMCHiggens]

thats my bad, i was told it needed those 4 other files to run

in the past it has never effected them, its interesting it has started to do so now

that said, my game does not seem to want to launch with automodpack installed despite that. i will see if i can find an actually useful log somewhere for that issue

[DMCHiggens]

crash-2025-06-17_13.33.25-client.txt

this is the latest crash log after i just tried to run the game with my main mods folder looking like this:

i have made fresh instances and it does not seem to solve the issue

[Skidamek]

Oh i see, the issue is that distant horizons bundles few fabric api modules but older version. However some other mods in your modpack require newer version of fabric api. However due to how fabric loader works we can't unload or load newer version of the same mod.

AutoModpack should indeed in such case leave the fabric api in the standard mods folder so it loads the newest version.

Sorry for the inconvenience, what you could do is, to provide the distant horizons in the modpack or modify it so it doesn't overwrite the fabric api modules with the old versions.

[Skidamek]

Here's the modified version you could try DistantHorizons-fabric-forge-2.3.2-b-1.20.1-modified.zip
(Do not close the issue, it is an automodpack issue, this is only a workaround)

[DMCHiggens]

thank you so much for the insight! that makes a lot of sense. curious that it wasnt doing this before

i really love github. i love that as a society i can ask for help from people who make cool shit.
i'll give that modified version a go!

[DMCHiggens]

this is the error im getting now, which is progress since before it gave no error popups

[Skidamek]

logs please

[Skidamek]

nervermind i see, fixed.
DistantHorizons-fabric-forge-2.3.2-b-1.20.1-modified-fix.zip

[DMCHiggens]

all appears to be well now on my end, i can join my server again at last!

[DMCHiggens]

Hello, my friend is having an issue connecting to our server. im able to join properly and it works no matter what, but they keep getting errors. we're losing hair trying to figure out why this is happening, so i was wondering if maybe you'd be able to help out.
here is their latest.log, and the servers latest.log
as well as a couple pictures of some errors that are showing up.

mage latest.log

server latest.log.txt

[Skidamek]

[18:48:57] [Server thread/INFO]: com.mojang.authlib.GameProfile@3374c74e[id=,name=Mage_n_Spice,properties={},legacy=false] (/45.46.100.233:54565) lost connection: Disconnected
[18:49:18] [User Authenticator #2/INFO]: UUID of player Mage_n_Spice is 314fbadb-21e2-40f4-a4b3-9a1d31bb28f2
[18:49:18] [Server thread/INFO]: [Handshake] Sending channel query
[18:49:18] [Netty Epoll Server IO #9/INFO]: Disconnecting com.mojang.authlib.GameProfile@236938f0[id=314fbadb-21e2-40f4-a4b3-9a1d31bb28f2,name=Mage_n_Spice,properties={textures=[com.mojang.authlib.properties.Property@40b469a8]},legacy=false] (/45.46.100.233:54566): o?o > ?chandshake failure
incompatible client
[18:49:18] [Netty Epoll Server IO #9/INFO]: [Handshake] Handshake failed, client did not respond to channel query

Very strange indeed, is automodpack modpack hosted? Check /automodpack host command, and restart with /amp host restart and try again

[Skidamek]

No idea tbh, but is it automodpack related? I mean something is wrong with the connection automodpack also doesn't work for some reason but it's the owo lib mod which kicks you out

[DMCHiggens]

No idea tbh, but is it automodpack related? I mean something is wrong with the connection automodpack also doesn't work for some reason but it's the owo lib mod which kicks you out

My theory was either a Java version issue or firewall issue within my friends PC, causing owo or automod to fail the handshake and kick.

im also a little curious, because Mage does not have owolib installed. its inside of the modpack, and automod hasnt reached the download portion yet.
i can understand why owolib might be kicking them out on the server end, but it confuses me that they would get an owolib error on their client if its not present in their system