Crash

My Vanilla Dedicated Server got this crash today.

 I don't know what made it crash or how it happened.

I use no mods & I am currently playing in the beta.

[06:23:48]: [string "scripts/entityscript.lua"]:1006: assertion failed!
LUA ERROR stack traceback:
=[C]:-1 in (global) assert (C) <-1--1>
scripts/entityscript.lua:1006 in (method) GetPosition (Lua) <1002-1008>
   self (valid:false) =
      DynamicShadow = DynamicShadow (2A390140)
      inlimbo = false
      GetMoistureRateScale = function - scripts/prefabs/player_common.lua:133
      SetCameraDistance = function - scripts/prefabs/player_common.lua:1310
      ScreenFlash = function - scripts/prefabs/player_common.lua:1372
      playercolour = table: 2C229B20
      IsOverheating = function - scripts/prefabs/player_common.lua:103
      Light = Light (2A390280)
      _isrezattuned = false
      OnRemoveEntity = function - scripts/prefabs/player_common.lua:631
      ShowHUD = function - scripts/prefabs/player_common.lua:1292
      ShowGiftItemPopUp = function - scripts/prefabs/player_common.lua:1304
      sg = sg="wilson", state="idle", time=6.30, tags = "idle,canrotate,"
      IsHUDVisible = function - scripts/prefabs/player_common.lua:1282
      ApplyScale = function - scripts/prefabs/player_common.lua:1387
      SetGhostMode = function - scripts/prefabs/player_common.lua:546
      ShowActions = function - scripts/prefabs/player_common.lua:1286
      OnWakeUp = function - scripts/prefabs/player_common.lua:1203
      Transform = Transform (2A390340)
      actionreplica = table: 1C7605B0
      actioncomponents = table: 1C766D98
      lower_components_shadow = table: 1C766758
      GetMaxMoisture = function - scripts/prefabs/player_common.lua:123
      talksoundoverride = dontstarve/characters/wolfgang/talk_large_LP
      CanUseTouchStone = function - scripts/prefabs/player_common.lua:73
      ShakeCamera = function - scripts/prefabs/player_common.lua:1330
      OnDespawn = function - scripts/prefabs/player_common.lua:1221
      Physics = Physics (2A3904A0)
      MiniMapEntity = MiniMapEntity (2A3903A0)
      IsFreezing = function - scripts/prefabs/player_common.lua:93
      _OnLoad = function - scripts/prefabs/wolfgang.lua:187
      replica = table: 1C75F930
      GetTemperature = function - scripts/prefabs/player_common.lua:83
      GUID = 116845
      ghostenabled = true
      _scalesource = table: 1CE78CD8
      EnableMovementPrediction = function - scripts/prefabs/player_common.lua:485
      SetCameraZoomed = function - scripts/prefabs/player_common.lua:1316
      hurtsoundoverride = dontstarve/characters/wolfgang/hurt_large
      Network = Network (2A390440)
      userid = KU_N2DdDrM-
      OnPreLoad = function - scripts/prefabs/player_common.lua:1109
      LightWatcher = LightWatcher (2A390460)
      inherentactions = table: 1C3B8F30
      spawntime = 563.46669605374
      SnapCamera = function - scripts/prefabs/player_common.lua:1322
      hasRevivedPlayer = true
      prefab = wolfgang
      _OnPreLoad = function - scripts/prefabs/wolfgang.lua:204
      ScreenFade = function - scripts/prefabs/player_common.lua:1363
      strength = mighty
      _wasnomorph = false
      entity = Entity (2C5CBFC0)
      name = Skizzy
      children = table: 1C1FBE38
      IsCarefulWalking = function - scripts/prefabs/player_common.lua:147
      OnSave = function - scripts/prefabs/player_common.lua:1083
      AttachClassified = function - scripts/prefabs/player_common.lua:620
      OnSleepIn = function - scripts/prefabs/player_common.lua:1175
      IsActionsVisible = function - scripts/prefabs/player_common.lua:1276
      ShowWardrobePopUp = function - scripts/prefabs/player_common.lua:1298
      OnLoad = function - scripts/prefabs/player_common.lua:1119
      SoundEmitter = SoundEmitter (2A390500)
      _mightiness_scale = 1.0191481638844
      AnimState = AnimState (2A390160)
      GetMoisture = function - scripts/prefabs/player_common.lua:113
      GetSandstormLevel = function - scripts/prefabs/player_common.lua:143
      DetachClassified = function - scripts/prefabs/player_common.lua:626
      components = table: 1C766848
      persists = false
scripts/components/hounded.lua:311 in (upvalue) ReleaseSpawn (Lua) <310-318>
   target =
[06:23:48]: [string "scripts/entityscript.lua"]:1006: assertion failed!
LUA ERROR stack traceback:
    =[C]:-1 in (global) assert (C) <-1--1>
    scripts/entityscript.lua:1006 in (method) GetPosition (Lua) <1002-1008>
    scripts/components/hounded.lua:311 in (upvalue) ReleaseSpawn (Lua) <310-318>
    scripts/components/hounded.lua:516 in (method) OnUpdate (Lua) <482-565>
    scripts/update.lua:192 in () ? (Lua) <149-228>