consistent crashing as Wonkey as the game seemingly keeps trying to spawn shadow creatures on the Wigfrid i used to be

I got something similar, but when transforming back

 

Spoiler

[00:16:40]: Serializing user: session/68494DF10B837B5E/A7I3P51QLD83/0000003116
[00:16:40]: [string "scripts/components/transparentonsanity.lua"]:38: attempt to index field 'sanity' (a nil value)
LUA ERROR stack traceback:
scripts/components/transparentonsanity.lua:38 in (method) OnUpdate (Lua) <29-49>
   self =
      offset = 1.0623421941408
      osc_amp = 0.25
      inst = 144667 - crawlinghorror (valid:true)
      target_alpha = 0.33059288281
      osc_speed = 1.5616619212813
      alpha = 0.033333335071802
      most_alpha = 0.4
   dt = 0.033333335071802
   player = 141804 - wonkey (valid:false)
scripts/update.lua:256 in () ? (Lua) <218-292>
   dt = 0.033333335071802
   tick = 20055
   k = 144667
   v = 144667 - crawlinghorror (valid:true)
   cmp = table: 0000000046470840

[00:16:40]: [string "scripts/components/transparentonsanity.lua"]:38: attempt to index field 'sanity' (a nil value)
LUA ERROR stack traceback:
    scripts/components/transparentonsanity.lua:38 in (method) OnUpdate (Lua) <29-49>
    scripts/update.lua:256 in () ? (Lua) <218-292>