Error

[03:49:15]: [string
"scripts/entityscript.lua"]:965:
assertion
failed!
LUA ERROR stack traceback:
=[C]:-1 in (global) assert (C) <-1--1>
scripts/entityscript.lua:965 in (method) GetPosition (Lua) <961-967>
   self (valid:false) =
      GUID = 149326
      Transform = Transform (082A3E28)
      inlimbo = false
      actionreplica = table: 1804A0D0
      actioncomponents = table: 1804BCC8
      lower_components_shadow = table: 180494C8
      dragonflypriority = 2
      entity = Entity (16F2A0B8)
      AnimState = AnimState (082A6468)
      prefab = homesign
      OldOnLoad = function - scripts/prefabs/homesign.lua:35
      OnSave = function - ../mods/workshop-404161345/modmain.lua:95
      Network = Network (090EF360)
      Physics = Physics (090F2C20)
      OldOnSave = function - scripts/prefabs/homesign.lua:29
      MiniMapEntity = MiniMapEntity (090EDFC0)
      SoundEmitter = SoundEmitter (0829A188)
      modactioncomponents = table: 09CD1FE0
      name = Sign
      OnLoad = function - ../mods/workshop-404161345/modmain.lua:104
      spawntime = 13015.534012146
      ownerlist = table: 16E9AB38
      replica = table: 18049928
      components = table: 18043820
      persists = false
../mods/workshop-377292520/modmain.lua:742 in (upvalue) LaunchItem (Lua) <735-748>
   inst = 149326 - homesign (valid:false)
   target = 143874 - wx78 (valid:true)
   item = 143932 - hammer (valid:true)
   x = 355.42196655273
   y = 0.2
   z = 103.9987487793
   hp = (355.42, 0.00, 104.00)
../mods/workshop-377292520/modmain.lua:782 in (method) WorkedBy (Lua) <758-798>
   self =
      onwork = function - scripts/prefabs/homesign.lua:22
      lastworktime = 13513.067371428
      inst = 149326 - homesign (valid:false)
      savestate = false
      destroyed = false
      _ = table: 06ED9A90
      onfinish = function - scripts/prefabs/homesign.lua:11
   worker = 143874 - wx78 (valid:true)
   numworks = 1
   arg = nil
   tm = 13513.067371428
   hammer = 143932 - hammer (valid:true)
scripts/actions.lua:478 in () ? (Lua) <469-481>
   act = Hammer 149326 - homesign With Inv: 143932 - hammer (valid:false)
   numworks = 1
=(tail call):-1 in ()  (tail) <-1--1>
=(tail call):-1 in ()  (tail) <-1--1>
scripts/bufferedaction.lua:23 in (method) Do (Lua) <19-33>
   self (valid:false) =
      action = table: 06ABA1A8
      invobject = 143932 - hammer (valid:true)
      onfail = table: 1596B3C0
      doerownsobject = true
      target = 149326 - homesign (valid:false)
      options = table: 1596B398
      doer = 143874 - wx78 (valid:true)
      onsuccess = table: 15960768
scripts/entityscript.lua:1216 in (method) PerformBufferedAction (Lua) <1208-1226>
   self (valid:true) =
      DynamicShadow = DynamicShadow (268E21A0)
      inlimbo = false
      GetMoistureRateScale = function - scripts/prefabs/player_common.lua:86
      SetCameraDistance = function - scripts/prefabs/player_common.lua:1197
      ScreenFlash = function - scripts/prefabs/player_common.lua:1253
      player_classified = 143875 - player_classified (valid:true)
      playercolour = table: 155A0AD8
      AnimState = AnimState (268EF0E0)
      Light = Light (268F11E0)
      _OnDespawn = function - ../mods/workshop-492173795/modmain.lua:758
      _isrezattuned = false
      OnRemoveEntity = function - scripts/prefabs/player_common.lua:568
      pendingtasks = table: 1584E690
      ShowHUD = function - scripts/prefabs/player_common.lua:1191
      sg = sg="wilson", state="hammer", time=0.30, tags = "prehammer,hammering,working,"
      IsHUDVisible = function - scripts/prefabs/player_common.lua:1181
      ApplyScale = function - scripts/prefabs/player_common.lua:1268
      SetGhostMode = function - scripts/prefabs/player_common.lua:476
      ShowActions = function - scripts/prefabs/player_common.lua:1185
      old_rotation = -33.592247009277
      OnWakeUp = function - scripts/prefabs/player_common.lua:1114
      Transform = Transform (268EBC00)
      actionreplica = table: 18147158
      event_listening = table: 1584CB10
      actioncomponents = table: 1814FD58
      lower_components_shadow = table: 1
[03:49:15]: [string
"scripts/entityscript.lua"]:965:
assertion
failed!
LUA ERROR stack traceback:
    =[C]:-1 in (global) assert (C) <-1--1>
    scripts/entityscript.lua:965 in (method) GetPosition (Lua) <961-967>
    ../mods/workshop-377292520/modmain.lua:742 in (upvalue) LaunchItem (Lua) <735-748>
    ../mods/workshop-377292520/modmain.lua:782 in (method) WorkedBy (Lua) <758-798>
    scripts/actions.lua:478 in () ? (Lua) <469-481>
    =(tail call):-1 in ()  (tail) <-1--1>
    =(tail call):-1 in ()  (tail) <-1--1>
    scripts/bufferedaction.lua:23 in (method) Do (Lua) <19-33>
    scripts/entityscript.lua:1216 in (method) PerformBufferedAction (Lua) <1208-1226>
    scripts/stategraphs/SGwilson.lua:1274 in (field) fn (Lua) <1273-1277>
    scripts/stategraph.lua:562 in (method) UpdateState (Lua) <530-574>
    scripts/stategraph.lua:601 in (method) Update (Lua) <593-621>
    scripts/stategraph.lua:123 in (method) Update (Lua) <107-146>
    scripts/update.lua:205 in () ? (Lua) <146-219>

[03:49:15]: SCRIPT ERROR! Showing error screen