PaperMC / PaperMC/Folia

Thread failed main thread check: Cannot getEntities asynchronously

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status: needs triage type: bug
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Description

Expected behavior

https://mclo.gs/UuVhA6b#L1342

Observed/Actual behavior

https://mclo.gs/UuVhA6b#L1342

Steps/models to reproduce

just run server on folia 1.21.6 (maybe work on 1.21.7)

Plugin and Datapack List

[21:34:21 INFO]: ℹ Server Plugins (63):
[21:34:21 INFO]: Paper Plugins (6):
[21:34:21 INFO]: - CarbonChat, ChatDisplay, emotecraft, EnchantedBook, FancyNpcs, MoreFoWorld
[21:34:21 INFO]: Bukkit Plugins (57):
[21:34:21 INFO]: - AntiHealthIndicator, ArmorStandEditor, AutoWhitelistRemove, AxInventoryRestore, BreweryX, CoreProtect, CoreProtectTNT, Craftorithm, DeluxeMenus, EasyPayments
[21:34:21 INFO]: Essentials, EssentialsSpawn, fast-leaf-decay, FlagsH, GSit, HeadDatabase, InteractiveSigns, InvisibleFrames, LevelledMobs, LiteBans
[21:34:21 INFO]: LuckPerms, Maintenance, mclogs, MilkyPixelart, NBTAPI, OreAnnouncer, packetevents, PlaceholderAPI, PlasmoVoice, PlayerHeads
[21:34:21 INFO]: ProtocolLib, pv-addon-discs, pv-addon-groups, pv-addon-lavaplayer-lib, pv-addon-sculk, pv-addon-spectator, rpchat, SkinShufflePlugin, spark, squaremap
[21:34:21 INFO]: squaremap-worldguard, squaremarker, StonecuttersPLUS, TAB, Terra, TWSAdmin, TWSCheck, TWSCore, UltimateAutoRestart, UltraCosmetics
[21:34:21 INFO]: Vault, ViaBackwards, ViaVersion, Votifier, VotingPlugin, WorldEdit, WorldGuard

Folia version

ver
[21:34:34 INFO]: Checking version, please wait...
[21:34:34 INFO]: This server is running Folia version 1.21.7-DEV-ver/1.21.6@942017b (1970-01-01T00:00:00Z) (Implementing API version 1.21.7-R0.1-SNAPSHOT)
Error obtaining version information
Previous version: 1.21.6-6-e4b0ae9 (MC: 1.21.6)

Other

No response

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked log at https://mclo.gs/UuVhA6b#L1342 and reproduce the failure on Folia 1.21.6 or 1.21.7 with the listed server setup. Trace the asynchronous getEntities call and the main-thread check; done means the reported failure no longer occurs under the reproduction conditions.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
backend, game-dev
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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