Describe the bug
When putting on the backpack the back pack disappears from inventory but is not put on and is not visible on character.

To Reproduce
Steps to reproduce the behavior:

1. create backpack
2. right click while holding the backpack
3. click equip backpack button
4. back pack is not on back and not in inventory.

Expected behavior
backpack is worn and is accessible via backpack inventory button

Screenshots
If applicable, add screenshots to help explain your problem.

Required informations (please complete the following information):

• Mod version: TravelersBackpack-1.19-8.0.1
• Mod Loader: Forge

Additional context
When we first added the mod it was working for player 1 and not player 2. Syncing config so that player 2 config files were exactly the same as player 1 and then is stopped working for player 1 as well. It appeared to work for a few minutes for both just before syncing config files.

We tried 4-10 backpack variations.

what are your config options?

Hmm, that's strange I'm testing it right now and verything works fine, give me your forge version, also do you play on modpack>

I'm not at my PC to copy them but the player 1 are the default settings. Player 2 had one setting different but they are both at the defaults now.

Last check the backpacks were still disappearing.

I'll update mod versions when I get back to my PC.

From memory we have 6 mods total.

Gravestones, xaeros maps, rei, fallingtree plus pre reqs

Forge 1.19 40.0.4

versions

Architectury 5.5.18
Cloth Config 7.0.69
Falling Tree 1.19-3.6.1
Gravestone 1.19-1.0.0
rei 9.0.472
travellers backpack 1.19-8.0.1
xaeros mini 22.9.2
xareos world 1.23.2

forge 1.19-41.0.4

Does it crash because of travelers backpack? Maybe There's other mod causing problem

I'm not there to see the exact error but the error is something about GUI overlay.

Another bit of information, on forge version 41.0.4 single player world -> backpack works, multiplayer -> backpacks fail.

I'll test this on my machine as well when I can.

When you equip backpack and it 'dissapears', do you see overlay like this?

Also I use forge 41.0.35 try changing to this version

Player 2 can't get past the loading screen after installing forge 41.0.35

Will test player 1 when I get home

I need to know if gui is visible

Open Minecraft launcher
Launch Minecraft
Red loading screen is displayed
Minecraft crashes
Crash report dialog
Return to launcher

can you give me crash report?

I'm not at home. Once I get a chance to see the error myself I'll send it along.

Okay

Hmm, I don't know how did you launch 1.19-8.0.1 with forge 41.0.4, because version 8.0.1 is build with forge with code changes and in my dev environment 41.0.4 just crashes. That's really strange

Crash report identifies architectury.

Updating forge to 41.0.35 and architectury to 5.7.28 resolves the issue.

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

-- Head --
Thread: Render thread
Stacktrace:
	at dev.architectury.event.forge.__EventHandlerImplClient_event_Pre.invoke(.dynamic) ~[architectury-5.5.18.jar%2375!/:?] {re:classloading,pl:eventbus:B}
	at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:93) ~[eventbus-6.0.0.jar%232!/:?] {}

And does backpack work now?

Yes, backpack is working with the forge update.

It looks like upgrading forge version fixed the backpack issue but introduced an issue with architectury which required a newer version of that mod.

Okay, if everything is fine im closing this issue