Opening a chest without GearSlots installed will spam the log hundreds of times per seconds with:
[Warning: HarmonyX] AccessTools.TypeByName: Could not find type named GearSlots.Runtime.SlotStateManager
This ultimately results in the game crashing if you don't quickly exit the chest. Pasting a log from a fresh character on a fresh world with only BepInEx, ModCore, and ChestFlow installed. I opened a chest and backed back out of it immediately. My game hung, and then I closed the game out.
[Message: BepInEx] BepInEx 5.4.23.5 - valheim (9/9/2026 8:14:48 AM) [Message: BepInEx] User is running BepInExPack Valheim version 5.4.2350 from Thunderstore [Info : BepInEx] Running under Unity v6000.0.75.2503836 [Info : BepInEx] CLR runtime version: 4.0.30319.42000 [Info : BepInEx] Supports SRE: True [Info : BepInEx] System platform: Bits64, Windows [Message: BepInEx] Preloader started [Info : BepInEx] Loaded 1 patcher method from [BepInEx.Preloader 5.4.23.5] [Info : BepInEx] 1 patcher plugin loaded [Info : BepInEx] Patching [UnityEngine.CoreModule] with [BepInEx.Chainloader] [Message: BepInEx] Preloader finished [Message: BepInEx] Chainloader ready [Message: BepInEx] Chainloader started [Info : BepInEx] 2 plugins to load [Info : BepInEx] Loading [ModCore 0.5.0] [Info : ModCore] ModCore 0.5.0 loaded. It provides coordination only and changes no gameplay by itself. [Info : BepInEx] Loading [ChestFlow 0.5.7] [Warning: HarmonyX] AccessTools.TypeByName: Could not find type named GearSlots.Runtime.SlotTransferService [Warning: HarmonyX] AccessTools.DeclaredMethod: type is null [Info : ChestFlow] Applied 40 of 40 ChestFlow patch classes. [Info : ChestFlow] ChestFlow 0.5.7 loaded. [Message: BepInEx] Chainloader startup complete [Info : Unity Log] 09/12/2026 14:53:19: Using environment steamid 892970
[Info : Unity Log] 09/12/2026 14:53:19: Using steam APPID:892970
[Info : Unity Log] 09/12/2026 14:53:19: Authentication:k_ESteamNetworkingAvailability_Attempting
[Info : Unity Log] 09/12/2026 14:53:19: 2026-09-12 14:53:19:804: Using environment steamid 892970
[Info : Unity Log] 09/12/2026 14:53:19: Platform doesn't implement Process Lifetime Management! Don't initialize suspend manager.
[Info : Unity Log] 09/12/2026 14:53:19: Initialized platform!
[Info : Unity Log] 09/12/2026 14:53:19: Platform doesn't implement matchmaking! Don't initialize matchmaking manager.
[Info : Unity Log] 09/12/2026 14:53:19: Initializing PrivilegeManager.
[Info : Unity Log] 09/12/2026 14:53:19: Initializing preferences provider...
[Info : Unity Log] 09/12/2026 14:53:19: No preference provider available for this platform!
[Info : Unity Log] 09/12/2026 14:53:19: Set background loading budget to Low
[Info : Unity Log] 09/12/2026 14:53:19: Loading first scene!
[Info : Unity Log] 09/12/2026 14:53:19: Fast load set to True
[Info : Unity Log] 09/12/2026 14:53:19: Fast load counter set to 1
[Info : Unity Log] 09/12/2026 14:53:19: Preferences initialized! Activating first scene!
[Info : Unity Log] 09/12/2026 14:53:20: Loading: Starting to load scene: start.unity (169d7618616154c03be07e9ad3af5893)
[Info : Unity Log] 09/12/2026 14:53:20: Fast load counter set to 2
[Info : Unity Log] 09/12/2026 14:53:20: Set background loading budget to Normal
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #0 - 'localization' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #1 - 'localization_extra' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #2 - 'heightmap_message' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #3 - 'localization_witch' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #4 - 'localization_ashlands' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #5 - 'localization_deepnorth' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #6 - 'localization_captions' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #7 - 'localization_warriortitles' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #8 - 'localization_combatupdate' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #9 - 'localization_ps' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #10 - 'localization_celebrationupdate' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #11 - 'localization_xbox' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #12 - 'localization_switch' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #0 - 'localization' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #1 - 'localization_extra' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #2 - 'heightmap_message' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #3 - 'localization_witch' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #4 - 'localization_ashlands' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #5 - 'localization_deepnorth' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #6 - 'localization_captions' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #7 - 'localization_warriortitles' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #8 - 'localization_combatupdate' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #9 - 'localization_ps' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #10 - 'localization_celebrationupdate' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #11 - 'localization_xbox' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:20: Loaded localization file #12 - 'localization_switch' language: 'English'
[Info : Unity Log] 09/12/2026 14:53:29: Loading: Done, Total time: -9.51159
[Info : Unity Log] 09/12/2026 14:53:29: Set background loading budget to Low
[Warning: Unity Log] Only custom filters can be played. Please add a custom filter or an audioclip to the audiosource (Amb_MainMenu). [Warning: Unity Log] 09/12/2026 14:53:30: Missing audio clip in music respawn
[Info : Unity Log] 09/12/2026 14:53:30: Valheim version: 1.0.12 (network version 40)
[Info : Unity Log] 09/12/2026 14:53:30: Worldgenerator version setup:2
[Info : Unity Log] 09/12/2026 14:53:30: Render threading mode:LegacyJobified
[Info : Unity Log] 09/12/2026 14:53:30: Checking for installed DLCs
[Info : Unity Log] 09/12/2026 14:53:30: DLC:beta installed:True
[Info : Unity Log] 09/12/2026 14:53:30: SaveSystem.Reload for Character is done [37ms]
[Info : Unity Log] 09/12/2026 14:53:30: SaveSystem.Reload for World is done [80ms]
[Info : Unity Log] 09/12/2026 14:53:30: Playing cinematic: $cinematics_intro
[Info : Unity Log] 09/12/2026 14:53:30: Sending PlayFab login request (attempt 1)
[Info : Unity Log] 09/12/2026 14:53:30: Missing attach item: 371857150 ob:Player(Clone) joint:Helmet_attach
[Info : Unity Log] 09/12/2026 14:53:30: Missing attach item: 371857150 ob:Player(Clone) joint:Helmet_attach
[Info : Unity Log] 09/12/2026 14:53:31: Session auth respons callback
[Info : Unity Log] 09/12/2026 14:53:31: Fast load set to False
[Info : Unity Log] 09/12/2026 14:53:31: Fast load counter set to 0
[Info : Unity Log] 09/12/2026 14:53:32: Logged in PlayFab user via Steam auth session ticket
[Info : Unity Log] 09/12/2026 14:53:32: Released session ticket
[Info : Unity Log] 09/12/2026 14:53:48: Starting music menu
[Info : Unity Log] 09/12/2026 14:54:32: show character selection
[Info : Unity Log] 09/12/2026 14:54:33: OnCharacterStart "test"
[Info : Unity Log] 09/12/2026 14:54:36: Loading main scene
[Info : Unity Log] 09/12/2026 14:54:36: Fast load set to True
[Info : Unity Log] 09/12/2026 14:54:36: Fast load counter set to 1
[Info : Unity Log] 09/12/2026 14:54:36: Audioman already exist, destroying self
[Info : Unity Log] 09/12/2026 14:54:36: Loading player profile test
[Info : Unity Log] 09/12/2026 14:54:36: isModded: True
[Info : Unity Log] 09/12/2026 14:54:36: Zonesystem Awake 4409
[Info : Unity Log] 09/12/2026 14:54:36: DungeonDB Awake 4409
[Info : Unity Log] 09/12/2026 14:54:36: Worldgenerator version setup:2
[Info : Unity Log] 09/12/2026 14:54:39: Checking for installed DLCs
[Info : Unity Log] 09/12/2026 14:54:39: DLC:beta installed:True
[Info : Unity Log] 09/12/2026 14:54:39: Zonesystem Start 4409
[Info : Unity Log] 09/12/2026 14:54:39: Added 3 locations, 0 vegetations, 0 environments, 0 biome env-setups, 0 clutter from main
[Info : Unity Log] 09/12/2026 14:54:39: Added 2 locations, 0 vegetations, 2 environments, 0 biome env-setups, 0 clutter from main
[Info : Unity Log] 09/12/2026 14:54:39: Added 27 locations, 25 vegetations, 5 environments, 1 biome env-setups, 3 clutter from main
[Info : Unity Log] 09/12/2026 14:54:39: Added 4 locations, 0 vegetations, 1 environments, 0 biome env-setups, 0 clutter from main
[Info : Unity Log] 09/12/2026 14:54:39: Added 25 locations, 33 vegetations, 8 environments, 2 biome env-setups, 2 clutter from main
[Info : Unity Log] 09/12/2026 14:5