Merm king bugged

Master shard crashed with this log:

[08:41:03]: [string "scripts/prefabs/mermking.lua"]:244: attempt to index field 'king' (a nil value)
LUA ERROR stack traceback:
scripts/prefabs/mermking.lua:244 in (local) fn (Lua) <242-258>
   inst = 261701 - mermguard (valid:true)
   remove_at = nil
scripts/entityscript.lua:1040 in (method) PushEvent (Lua) <1027-1054>
   self (valid:true) =
      DynamicShadow = DynamicShadow (0x144275e0)
      Transform = Transform (0x3e8bddf0)
      inlimbo = false
      actionreplica = table: 0x1930d360
      event_listening = table: 0x401b77f0
      brain = --brain--
sleep time: 0.06
Priority - RUNNING <RUNNING> (execute 2, eval in 0.08)>0.06
   >Parallel - READY <READY> ()>0.00
   >   >OnFire - READY <READY> ()>0.00
   >   >Panic - READY <READY> ()>0.00
   >Parallel - RUNNING <RUNNING> ()>0.06
   >   >AttackMomentarily - READY <SUCCESS> ()>0.00
   >   >ChaseAndAttack - RUNNING <RUNNING> ()>0.06
   >Parallel - READY <READY> ()>0.00
   >   >Dodge - READY <READY> ()>0.00
   >   >RunAway - READY <READY> ()>0.00
   >Parallel - READY <READY> ()>0.00
   >   >ShouldGoToThrone - READY <READY> ()>0.00
   >   >Priority - READY <READY> ()>0.00
   >   >   >Leash - READY <READY> ()>0.00
   >   >   >Sequence - READY <READY> ()>0.00
   >   >   >   >IsThroneValid - READY <READY> ()>0.00
   >   >   >   >ActionNode - READY <READY> ()>0.00
   >Sequence - READY <READY> ()>0.00
   >   >chop - READY <READY> ()>0.00
   >   >Parallel - READY <READY> ()>0.00
   >   >   >keep chopping - READY <READY> ()>0.00
   >   >   >Sequence - READY <READY> ()>0.00
   >   >   >   >ChattyNode - READY  [**truncated**]
      actioncomponents = table: 0x331e45c0
      sounds = table: 0x3c1d1630
      lower_components_shadow = table: 0x35bfc1b0
      entity = Entity (0x415399a0)
      AnimState = AnimState (0x36c31690)
      prefab = mermguard
      updatecomponents = table: 0xa4a4350
      return_to_king = false
      Network = Network (0x1c1d83a0)
      Physics = Physics (0x30f34b70)
      brainfn = table: 0xd1589a0
      SoundEmitter = SoundEmitter (0x17216190)
      name = Loyal Merm Guard
      event_listeners = table: 0x3b654a50
      sg = sg="merm", state="hit", time=0.27, tags = "hit,busy,"
      spawntime = 18431.900961298
      pendingtasks = table: 0x95d13e0
      replica = table: 0x23e39800
      GUID = 261701
      components = table: 0x320aad60
      persists = true
   event = death
   data = table: 0x14017a50
   listeners = table: 0x2a5fc260
   tocall = table: 0x972edc0
   i = 2
   fn = function - scripts/prefabs/mermking.lua:242
scripts/components/health.lua:354 in (method) SetVal (Lua) <334-371>
   self =
      minhealth = 0
      absorb = 0
      firedamagecaptimer = 0
      nofadeout = false
      firedamageinlastsecond = 0
      externalabsorbmodifiers = table: 0x3d4fcc30
      playerabsorb = 0
      inst = 261701 - mermguard (valid:true)
      externalfiredamagemultipliers = table: 0x2b5f24b0
      fire_damage_scale = 1
      takingfiredamagetime = 0
      _ = table: 0x3e95fb20
      fire_timestart = 1
   val = -20
   cause = bishop_nightmare
   afflicter = 259605 - bishop_nightmare (valid:true)
   old_health = 20
   max_health = 660
   min_health = 0
scripts/components/health.lua:383 in (method) DoDelta (Lua) <373-392>
   self =
      minhealth = 0
      absorb = 0
      firedamagecaptimer = 0
      nofadeout = false
      firedamageinlastsecond = 0
      externalabsorbmodifiers = table: 0x3d4fcc30
      playerabsorb = 0
      inst = 261701 - mermguard (valid:true)
      externalfiredamagemultipliers = table: 0x2b5f24b0
      fire_damage_scale = 1
      takingfiredamagetime = 0
      _ = table: 0x3e95fb20
      fire_timestart = 1
   amount = -40
   overtime = nil
   cause = bishop_nightmare
   ignore_invincible = nil
   afflicter = 259605 - bishop_nightmare (valid:true)
   ignore_absorb = nil
   old_percent = 0.03030303030303
scripts/components/combat.lua:459 in (method) GetAttacked (Lua) <433-515>
   self =
      hiteffectsymbol = pig_torso
      defaultdamage = 50
      keeptargetfn = function - scripts/prefabs/merm.lua:93
      forcefacing = true
 
[08:41:03]: [string "scripts/prefabs/mermking.lua"]:244: attempt to index field 'king' (a nil value)
LUA ERROR stack traceback:
    scripts/prefabs/mermking.lua:244 in (local) fn (Lua) <242-258>
    scripts/entityscript.lua:1040 in (method) PushEvent (Lua) <1027-1054>
    scripts/components/health.lua:354 in (method) SetVal (Lua) <334-371>
    scripts/components/health.lua:383 in (method) DoDelta (Lua) <373-392>
    scripts/components/combat.lua:459 in (method) GetAttacked (Lua) <433-515>
    scripts/components/combat.lua:895 in (method) DoAttack (Lua) <832-919>
    scripts/components/projectile.lua:211 in (method) Hit (Lua) <191-218>
    scripts/components/projectile.lua:273 in (upvalue) DoUpdate (Lua) <257-324>
    scripts/components/projectile.lua:352 in (method) OnUpdate (Lua) <326-353>
    scripts/update.lua:202 in () ? (Lua) <159-238>
    
[08:41:03]: Warning: Widget:SetFocusFromChild is happening on a widget outside of the screen/widget hierachy. This will cause focus moves to fail. Is     ScriptErrorWidget    not a screen?    
[08:41:03]: stack traceback:
    scripts/widgets/widget.lua:605 in (method) SetFocusFromChild (Lua) <602-627>
    scripts/widgets/widget.lua:624 in (method) SetFocusFromChild (Lua) <602-627>
    scripts/widgets/widget.lua:624 in (method) SetFocusFromChild (Lua) <602-627>
    scripts/widgets/widget.lua:656 in (method) SetFocus (Lua) <629-665>
    scripts/widgets/menu.lua:83 in (method) SetFocus (Lua) <74-85>
    scripts/widgets/scripterrorwidget.lua:109 in (method) OnUpdate (Lua) <102-119>
    scripts/update.lua:90 in () ? (Lua) <33-129>