Possible Fixes

Yes

Modpack Version

0.2.53/0.2.52

What happened?

Pack was updated to 0.2.52, when crafting table is picked up, quest Chapter 1: The Beginning/Putting the Craft in Minecraft reactivates causing an infinite loop of finished quests popups, ultimately leading to server timeout.
Also happens on 0.2.53.
Probably only happens on saves from before 0.2.52, with many quests completed, couldn't reproduce on a fresh save.

After the incident nothing new is written to latest.log and debug.log
There are 3 added mods: Alex's caves, Citadel, Customizable Player Models, but also happens on pure ATM9

There are other players reporting this issue on ATM Discord:
darth_503
jerta

Crash Log

https://mclo.gs/EHv4wKL
https://gist.github.com/Blazingi/8f522b38c4d04e495cb7ff97d2971757

Can confirm on a pure ATM9 server. Attempting to add a crafting table to my inventory by any means causes a loop and times out. Also on 0.2.53

Also experiencing this on a server I'm hosting on 0.2.5.3

Just had the same thing happen. My friend put a crafting table into their inventory, then the server crashed. Also on 0.2.53

Can confirm, 0.2.53 server. Crafting table or oak chest in inventory causes the completed quest loop and crash. Also on a single player with the same world.

/edit server konsole puts out this:
[08:43:24] [Server thread/WARN] [AE2:S/]: Could not decode an invalid crafting pattern {in:[{Count:1b,id:"minecraft:chest"},{},{},{},{},{},{},{},{}],out:{Count:1b,id:"functionalstorage:oak_1"},recipe:"functionalstorage:oak_drawer_alternate_x1",substitute:0b,substituteFluids:0b}: java.lang.NullPointerException: Cannot invoke "net.minecraft.world.item.crafting.CraftingRecipe.m_5818_(net.minecraft.world.Container, net.minecraft.world.level.Level)" because "this.recipe" is null

I dont have this pattern in the system.

this is also happening on 0.2.54 for both me and my friend

Which quest did you delete? @KSxx

The one for the crafting table in chapter 1. Oh and for the normal chest - it bugged for me too.

First noticed this issue in 0.2.54, rolled back to 0.2.53 and the issue was again able to be reproduced. Reverting back to 0.2.52 now triggered the same issue, which was what the server ran for a week without issue. Opening the quest log shows that all of the quests are still completed in all versions, but crafting a crafting table still triggers the issue.

Edit: Changed the version of the server back to 0.2.51 and the issue was resolved. I was able to making crafting tables and have them in my inventory without issue. So, I can also confirm that it is likely an issue created with all the quest updates in 0.2.52.

I deleted the quest in edit-mode, it helps. Couldn't find any other solution, 0.2.54 didn't help ether.

Which quest did you delete? @KSxx

Same problem in 0.2.56 for me and my friends