Describe the Bug

Server hangs on single tick, causing a crash. Turns out a conveyor belt was causing an issue, and unstucking the player fixed the issue. ATM8 dev said this was the relevant line, but I'll post the full log also.

at com.simibubi.create.content.contraptions.relays.belt.BeltTileEntity.initializeItemHandler(BeltTileEntity.java:175) ~[create-1.19.2-0.5.0.i.jar%23499!/:0.5.0.i] {re:classloading,pl:runtimedistcleaner:A}
    at com.simibubi.create.content.contraptions.relays.belt.BeltTileEntity.getCapability(BeltTileEntity.java:188) ~[create-1.19.2-0.5.0.i.jar%23499!/:0.5.0.i] {re:classloading,pl:runtimedistcleaner:A}
    at net.minecraftforge.common.capabilities.ICapabilityProvider.getCapability(ICapabilityProvider.java:33) ~[forge-1.19.2-43.2.6-universal.jar%23748!/:?] {re:computing_frames,re:mixin,re:classloading}

Reproduction Steps

Sadly, I'm not too sure how this issue surfaced. I wish I could give you more details, but I wasn't online and we didn't know the conveyor belt was the issue until I sought help from the ATM8 devs.

Expected Result

Server to start and not crash.

Screenshots and Videos

No response

Crash Report or Log

https://pastebin.com/q0iWUKkh

Operating System

Ubuntu 20.04 LTS

Mod Version

0.5.0i

Minecraft Version

1.19.2

Forge Version

43.2.6

Other Mods

This being from ATM8, there is a lot.

AE2-Things-1.1.1.jar
AE2WTLib-12.8.5.jar
AEAdditions-1.19.2-4.0.3.jar
AEInfinityBooster-1.19.2-1.2.0+11.jar
AIOTBotania-1.19.2-3.0.0.jar
Ad-Astra-Giselle-Addon-forge-1.19.2-1.12.jar
AdditionalEnchantedMiner-1.19.2-19.10.6.jar
AdvancedPeripherals-0.7.22b.jar
AdvancementPlaques-1.19.2-1.4.7.jar
AllTheCompressed-1.19.2-2.0.0.jar
AngelRing2-1.19.2-2.1.5.jar
Apotheosis-1.19.2-6.0.3.jar
Applied-Botanics-1.4.2.jar
Applied-Mekanistics-1.3.4.jar
Aquaculture-1.19.2-2.4.8.jar
AttributeFix-Forge-1.19.2-17.1.3.jar
AutoRegLib-1.8.2-55.jar
BambooEverything-forge-2.2.4-build.33+mc1.19.2.jar
Bookshelf-Forge-1.19.2-16.2.17.jar
Botania-1.19.2-437-FORGE.jar
BotanyPots-Forge-1.19.2-9.0.27.jar
BotanyTrees-Forge-1.19.2-5.0.4.jar
CTM-1.19.2-1.1.6+8.jar
Clumps-forge-1.19.2-9.0.0+14.jar
CommonCapabilities-1.19.2-2.9.0.jar
Controlling-forge-1.19.2-10.0+7.jar
CosmeticArmorReworked-1.19.2-v1a.jar
Croptopia-1.19.2-FORGE-2.2.2.jar
Cucumber-1.19.2-6.0.6.jar
CyclopsCore-1.19.2-1.17.5.jar
DarkUtilities-Forge-1.19.2-13.1.7.jar
Delightful-1.19.2-3.2.2.jar
DimStorage-1.19.2-7.2.0.jar
DungeonCrawl-1.19-2.3.11.jar
DungeonsArise-1.19.2-2.1.54-release.jar
EdivadLib-1.19.2-1.2.0.jar
EvilCraft-1.19.2-1.2.15.jar
ExperienceBugFix-1.19-1.41.2.3.jar
ExtraDisks-1.19.2-2.2.0.jar
ExtraStorage-1.19.2-3.0.1.jar
FarmersDelight-1.19-1.2.0.jar
FastFurnace-1.19.2-7.0.0.jar
FastLeafDecay-30.jar
FastSuite-1.19.2-4.0.0.jar
FastWorkbench-1.19.2-7.0.1.jar
FluxNetworks-1.19.2-7.1.3.12.jar
FramedBlocks-6.7.0.jar
GameMenuModOption-1.19-1.18.jar
GatewaysToEternity-1.19.2-3.1.1.jar
GravitationalModulatingAdditionalUnit-1.19.2-2.8.jar
HealthOverlay-1.19.2-7.2.1.jar
HostileNeuralNetworks-1.19.2-4.0.2.jar
Iceberg-1.19.2-forge-1.1.4.jar
ImmersiveEngineering-1.19.2-9.1.2-159.jar
IntegratedCrafting-1.19.2-1.1.0.jar
IntegratedDynamics-1.19.2-1.15.1.jar
IntegratedTerminals-1.19.2-1.4.4.jar
IntegratedTunnels-1.19.2-1.8.18.jar
InventoryProfilesNext-forge-1.19-1.9.2.jar
IronJetpacks-1.19.2-6.0.3.jar
JCPlugin-1.18.x-1.19.x-2.8.7.jar
JustEnoughProfessions-forge-1.19-2.0.1.jar
JustEnoughResources-1.19.2-1.2.1.193.jar
LibX-1.19.2-4.2.8.jar
Mekanism-1.19.2-10.3.8.477.jar
MekanismGenerators-1.19.2-10.3.8.477.jar
MekanismTools-1.19.2-10.3.8.477.jar
Morph-o-Tool-1.6-34.jar
MouseTweaks-forge-mc1.19-2.23.jar
MyServerIsCompatible-1.19-1.0.jar
MysticalAgradditions-1.19.2-6.0.2.jar
MysticalAgriculture-1.19.2-6.0.8.jar
MysticalCustomization-1.19.2-4.0.1.jar
NaturesAura-37.7.jar
NaturesCompass-1.19.2-1.10.0-forge.jar
NoChatReports-FORGE-1.19.2-v1.5.1.jar
Oh_The_Biomes_You'll_Go-forge-1.19.2-2.0.0.13.jar
PackMenu-1.19.2-5.1.0.jar
Patchouli-1.19.2-77.jar
PigPen-Forge-1.19.2-11.1.2.jar
Placebo-1.19.2-7.1.2.jar
Powah-4.0.6.jar
Prism-1.19.1-1.0.2.jar
Quark-3.4-389.jar
RSInfinityBooster-1.19.2-3.0+27.jar
RootsClassic-1.19.2-1.1.34.jar
Runelic-Forge-1.19.2-14.1.4.jar
ScalableCatsForce-2.13.10-build-10-with-library.jar
Shrink-1.19-1.3.5.jar
SmartBrainLib-forge-1.19.2-1.8.jar
SoL-Carrot-1.19.2-1.14.0.jar
StructureCompass-1.19.2-1.3.5.jar
SuperFactoryManager-1.19.2-4.4.4.jar
TerraBlender-forge-1.19.2-2.0.1.136.jar
ThermalExtra 1.19.2-3.0.1.jar
ToolBelt-1.19.2-1.19.7.jar
TravelAnchors-1.19.2-4.1.2.jar
UtilitiX-1.19.2-0.7.6.jar
WitherSkeletonTweaks-1.19.2-8.0.0.jar
XNetGases-1.19.1-4.0.0.jar
XyCraft Core-0.5.17.jar
XyCraft Override-0.5.17.jar
XyCraft World-0.5.17.jar
YungsApi-1.19.2-Forge-3.8.7.jar
YungsBetterDungeons-1.19.2-Forge-3.2.2.jar
YungsBetterMineshafts-1.19.2-Forge-3.2.0.jar
YungsBetterOceanMonuments-1.19.2-Forge-2.1.0.jar
YungsBetterStrongholds-1.19.2-Forge-3.2.0.jar
YungsBetterWitchHuts-1.19.2-Forge-2.1.0.jar
[1.19.2] SecurityCraft v1.9.4.jar
absentbydesign-1.19-1.7.0.jar
ad_astra-forge-1.19.2-1.12.3.jar
additional_lights-1.19-2.1.6.jar
additionallanterns-1.0.4-forge-mc1.19.jar
advgenerators-1.4.0.5-mc1.19.2.jar
alchemistry-1.19.2-2.2.4.jar
alchemylib-1.19.2-1.0.20.jar
allthemodium-2.1.6-1.19.2-43.1.1.jar
alltheores-2.0.2-1.19.2-43.1.3.jar
allthetweaks-2.0.4-1.19.2-43.1.3.jar
almostunified-forge-1.19.2-0.3.5.jar
antighost-1.19.1-forge42.0.1-1.1.3.jar
appleskin-forge-mc1.19-2.4.2.jar
appliedcooking-2.0.3.jar
appliedenergistics2-forge-12.9.2.jar
architectury-6.5.69-forge.jar
ars_creo-1.19.2-3.1.3.jar
ars_elemental-1.19.2-0.5.8.1.jar
ars_nouveau-1.19.2-3.12.3.jar
artifacts-1.19.2-5.0.1.jar
balm-forge-1.19.2-4.5.5.jar
baubley-heart-canisters-1.19.2-1.2.3.jar
bdlib-1.25.0.5-mc1.19.2.jar
biggerreactors-1.19.2-0.6.0-beta.6.jar
blockui-1.19-0.0.64-ALPHA.jar
blue_skies-1.19.2-1.3.20.jar
blueflame-1.19.2-0.1.0.2.jar
botarium-forge-1.19.2-1.8.2.jar
buildinggadgets-3.16.2-build.22+mc1.19.2.jar
cabletiers-1.19.2-0.5471.jar
caelus-forge-1.19.2-3.0.0.6.jar
cc-tweaked-1.19.2-1.101.2.jar
cfm-7.0.0-pre35-1.19.2.jar
charginggadgets-1.9.0.jar
charmofundying-forge-6.1.1+1.19.2.jar
chemlib-1.19.2-2.0.17.jar
chipped-forge-1.19.2-2.1.1.jar
clickadv-1.19.2-3.0.jar
cloth-config-8.2.88-forge.jar
cofh_core-1.19.2-10.2.1.40.jar
comforts-forge-6.0.3+1.19.2.jar
compactmachines-5.1.0.jar
configured-2.0.1-1.19.2.jar
connectedglass-1.1.6-forge-mc1.19.jar
connectivity-1.19.2-3.4.jar
constructionwand-1.19.2-2.9.jar
cookingforblockheads-forge-1.19.2-13.3.1.jar
corail_woodcutter-1.19.2-2.5.1.jar
crafting-on-a-stick-1.19.2-1.0.5.jar
craftingtweaks-forge-1.19-15.1.6.jar
crashutilities-6.2.jar
create-1.19.2-0.5.0.i.jar
createaddition-1.19.2-20230202b.jar
creeperoverhaul-2.0.8-forge.jar
ctov-3.1.5a.jar
curios-forge-1.19.2-5.1.2.2.jar
dankstorage-1.19.2-5.1.6.jar
deeperdarker-forge-1.1.6-forge.jar
deepresonance-1.19-4.1.2.jar
domum_ornamentum-1.19-1.0.76-ALPHA-universal.jar
dpanvil-1.19.2-4.3.1.jar
dummmmmmy-1.19.2-1.7.1.jar
eccentrictome-1.19.2-1.9.1.jar
elementalcraft-1.19.2-5.5.10.jar
elevatorid-1.19.2-1.8.9.jar
elytraslot-forge-6.1.0+1.19.2.jar
enderchests-forge-1.19.0-1.10.1.01.jar
endertanks-forge-1.19.0-1.12.1.01.jar
energymeter-1.19.2-1.0.0.jar
engineersdecor-1.19.2-forge-1.3.28.jar
ensorcellation-1.19.2-4.2.0.14.jar
entangled-1.3.13-forge-mc1.19.jar
farmingforblockheads-forge-1.19.2-11.2.0.jar
ferritecore-5.0.3-forge.jar
findme-3.1.0-forge.jar
ftb-chunks-forge-1902.3.15-build.233.jar
ftb-essentials-1902.1.10-build.47.jar
ftb-industrial-contraptions-1900.1.7-build.212.jar
ftb-library-forge-1902.3.14-build.184.jar
ftb-quests-forge-1902.4.9-build.195.jar
ftb-ranks-forge-1902.1.14-build.70.jar
ftb-teams-forge-1902.2.12-build.95.jar
ftb-ultimine-forge-1902.3.5-build.65.jar
fuelgoeshere-1.19.2-0.1.0.0.jar
functionalstorage-1.19.2-1.1.3.jar
geckolib-forge-1.19-3.1.40.jar
getittogetherdrops-forge-1.19.2-1.3.jar
glassential-forge-1.19-1.2.4.jar
guardvillagers-1.19.2-1.5.2.jar
handcrafted-forge-1.19.2-2.0.2.jar
harvestwithease-1.19.2-4.0.0.3-forge.jar
hexcasting-forge-1.19.2-0.10.3.jar
hexerei-0.2.5.jar
industrial-foregoing-1.19.2-3.3.2.2-4.jar
integratednbt-1.19.2-1.6.0.jar
inventoryessentials-forge-1.19-5.0.2.jar
ironfurnaces-1.19.2-3.6.5.jar
item-filters-forge-1902.2.9-build.46.jar
itemcollectors-1.1.7-forge-mc1.19.jar
jei-1.19.2-forge-11.6.0.1011.jar
jmi-forge-1.19.2-0.13-30.jar
journeymap-1.19.2-5.9.3-forge.jar
jumpboat-1.19-0.1.0.5.jar
kotlinforforge-3.10.0-all.jar
kubejs-forge-1902.6.0-build.142.jar
laserio-1.5.2.jar
letmedespawn-1.18.x-1.19.x-forge-1.0.3.jar
libIPN-forge-1.19-2.0.2.jar
littlecontraptions-forge-1.19.2.0.jar
littlelogistics-mc1.19.2-v1.3.1.jar
lootr-1.19-0.3.22.59.jar
mahoutsukai-1.19.2-v1.34.41.jar
mcjtylib-1.19-7.1.5.jar
mcw-bridges-2.0.6-mc1.19.2forge.jar
mcw-doors-1.0.8forge-mc1.19.2.jar
mcw-fences-1.0.7-mc1.19.2forge.jar
mcw-lights-1.0.5-mc1.19.2forge.jar
mcw-roofs-2.2.2-mc1.19.2forge.jar
mcw-trapdoors-1.0.8-mc1.19.2forge.jar
megacells-forge-2.0.0-beta.7-1.19.2.jar
merequester-1.19.2-1.0.3.jar
minecolonies-1.19.2-1.0.1247-BETA.jar
mininggadgets-1.13.0.jar
mob_grinding_utils-1.19.2-0.4.47.jar
modonomicon-1.19.2-1.26.0.jar
modular-routers-1.19.2-10.2.0-3.jar
moonlight-1.19.2-2.2.13-forge.jar
moredragoneggs-3.2.jar
multipiston-1.19.2-1.2.21-ALPHA.jar
myrtrees-forge-1.2.0-build.31.jar
naturalist-forge-2.1.1-1.19.2.jar
netherportalfix-forge-1.19-10.0.1.jar
nomowanderer-1.19.2_1.3.6.jar
observable-3.3.1.jar
occultism-1.19.2-1.71.1.jar
paucal-forge-1.19.2-0.5.0.jar
phosphophyllite-1.19.2-0.6.0-beta.6.4.jar
pipez-1.19.2-1.0.1.jar
platforms-1.19-1.10.2.jar
pneumaticcraft-repressurized-1.19.2-4.3.3-22.jar
polymorph-forge-0.46.1+1.19.2.jar
ponderjs-1.19.2-1.1.11.jar
potionsmaster-0.6.0-1.19.2-43.1.1.jar
productivebees-1.19.2-0.10.5.2.jar
pylons-1.19.2-3.1.0.jar
quartz-1.19.2-0.1.0-beta.1.jar
radon-0.8.2.jar
rangedpumps-1.0.0.jar
rebornstorage-1.19.2-5.0.3.jar
rechiseled-1.0.12a-forge-mc1.19.jar
redstone_arsenal-1.19.2-7.2.0.15.jar
refinedcooking-3.0.3.jar
refinedstorage-1.11.5.jar
refinedstorageaddons-0.9.0.jar
reliquary-1.19.2-2.0.20.1166.jar
repurposed_structures_forge-6.3.11+1.19.2.jar
resourcefulconfig-forge-1.19.2-1.0.19.jar
resourcefullib-forge-1.19.2-1.1.22.jar
rftoolsbase-1.19.1-4.1.5.jar
rftoolsbuilder-1.19.1-5.2.3.jar
rftoolscontrol-1.19-6.1.2.jar
rftoolspower-1.19-5.1.1.jar
rftoolsstorage-1.19-4.1.0.jar
rftoolsutility-1.19-5.1.4.jar
rhino-forge-1902.2.2-build.264.jar
rsrequestify-2.3.0.jar
saturn-mc1.19.2-0.0.1.jar
sebastrnlib-2.0.1.jar
shetiphiancore-forge-1.19.0-3.11.3.01.jar
silent-gear-1.19.2-3.2.5.jar
silent-lib-1.19.2-7.0.3.jar
simplemagnets-1.1.9-forge-mc1.19.jar
simplylight-1.19.2-1.4.5-build.42.jar
smallships-1.19.2-2.0.0-Alpha-0.4.jar
smoothboot(reloaded)-mc1.19.2-0.0.2.jar
sophisticatedbackpacks-1.19.2-3.18.40.779.jar
sophisticatedcore-1.19.2-0.5.38.203.jar
sophisticatedstorage-1.19.2-0.6.16.276.jar
spark-1.10.29-forge.jar
spirit-forge-1.19.2-2.2.3.jar
structure_gel-1.19.2-2.7.1.jar
structurize-1.19.2-1.0.472-BETA.jar
supermartijn642configlib-1.1.6b-forge-mc1.19.jar
supermartijn642corelib-1.1.4-forge-mc1.19.jar
supplementaries-1.19.2-2.2.51.jar
systeams-1.2.2.jar
tempad-forge-1.19.2-1.4.4.jar
tesseract-1.0.29-forge-mc1.19.jar
theoneprobe-1.19-6.2.2.jar
thermal_cultivation-1.19.2-10.2.0.17.jar
thermal_dynamics-1.19.2-10.2.1b.14.jar
thermal_expansion-1.19.2-10.2.0.21.jar
thermal_foundation-1.19.2-10.2.0.47.jar
thermal_innovation-1.19.2-10.2.0.18.jar
thermal_integration-1.19.2-10.2.0.17.jar
thermal_locomotion-1.19.2-10.2.0.14.jar
theurgy-1.19.2-1.3.0.jar
time-in-a-bottle-3.0.1-mc1.19.jar
titanium-1.19.2-3.7.2-26.jar
tombstone-8.2.5-1.19.2.jar
torchmaster-19.2.0.jar
trashcans-1.0.17-forge-mc1.19.jar
trashslot-forge-1.19-12.0.2.jar
twilightforest-1.19.2-4.2.1518-universal.jar
universalgrid-1.19.2-1.033.jar
villagertools-1.19-1.0.3.jar
vitalize-forge-1.19.2-1.1.1.jar
voidtotem-forge-1.19.2-2.1.0.jar
waystones-forge-1.19.1-11.2.0.jar
wirelesschargers-1.0.8-forge-mc1.19.jar
xnet-1.19-5.1.3.jar
yeetusexperimentus-1.0.1-build.2+mc1.19.1.jar

Additional Context

No response

Bumping this. Not sure if it is the same issue, but it seems to happen in DawnCraft as well. https://pastebin.com/MbMksqiq

Teleporting players out of the chunk using nbteditor fixes it.

I'm having the same issue, server times out and crashes when logging in.
https://pastebin.com/3xrT1abY

Edit: teleporting players away fixes it

"Turns out a conveyor belt was causing an issue, and unstucking the player fixed the issue."

Could you expand on this please? A stuck player on a belt becoming unstuck fixed it?

Sorry, it was 3AM while I was writing this out. I used crashutils unstuck command, from the server console directly. It effectively just teleports the player to spawn.

same issue on create-1.19.2-0.5.1.b using forge 43.2.14
Beware its now called BeltBlockEntity

Root cause is in BeltBlockEntity.java lines 186/187
https://github.com/Creators-of-Create/Create/blob/39ef3da5df0fad2054d8b95f15b51b4199479774/src/main/java/com/simibubi/create/content/kinetics/belt/BeltBlockEntity.java#LL187C3-L187C3

if (!isRemoved() && !itemHandler.isPresent())
initializeItemHandler();

commenting out this lines resolves the issue - no side effects seen since Feb 4
same issue as #4413

The call to level.getBlockEntity() inside initializeItemHandler() is triggering a task in worker thread(s) that isn't completing.

There's probably already a lock on a world data structure in this scenario (inside a getCapability() call) so this results in a deadlock.

The commit for the lines that add the call to initializeItemHandler() say it was to ensure the ItemHandler is available on the first tick - 405b7cb

But no mention of what this actually fixed. A crash or undesirable behaviour? If the latter, then removing these lines would be the better option.

EDIT

I was able to stop the crashing in one case by updating the modpack (Vault Hunters 3 - 10.0.0 to 10.1.0) and approaching the chunks from a distance. Not sure which of these fixed it.

It does open the possibility that some other mod was causing the ``level.getBlockEntity()` call to result in a hang.

Unfortunately this wasn't a permanent fix. Eventually it gets into a state where a player logging into the chunk and forcing it to load will cause the hang.