I just tried it and it worked fine.

ok just tried it with just this mod and cheat mode activated (as to not waste time to hunt down the magazine) it works so it;s definitely a mod compatibility problem,will let you know if i find something

ok i believe i found the offending mod its the Extra Skill System

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=1994874592

with it enabled your mod wont work

ill notify the author,sorry for the false alarm

This mod observes that the pc has finished reading the magazine and assigns the trait.
That mod seems to replace the entire process of reading a book, so there will always be a conflict.

I don't know if that mod can be temporarily disabled, but this mod can be disabled after the trait is assigned.

it can be disabled,but is required for Profession Framework mod witch in turn is required by Blacksmith mod,anyway i left a message to the author,so i hope he will look at it as i believe the incompatibility is not on your end,we'll see what happens

LOG : Lua , 1652978095156> 269.975.890> Loading: steamapps/workshop/content/108600/1934095105/mods/TheNutritionist/media/lua/server/TheNutritionist.lua
ERROR: General , 1652978095211> 269.975.945> ExceptionLogger.logException> Exception thrown java.lang.RuntimeException: bad argument #1 to 'sub' (string expected, got nil) at KahluaUtil.fail line:358.
ERROR: General , 1652978095211> 269.975.946> DebugLogStream.printException> Stack trace:
java.lang.RuntimeException: bad argument #1 to 'sub' (string expected, got nil)
at se.krka.kahlua.vm.KahluaUtil.fail(KahluaUtil.java:358)
at se.krka.kahlua.vm.KahluaUtil.getStringArg(KahluaUtil.java:333)
at se.krka.kahlua.stdlib.StringLib.getStringArg(StringLib.java:680)
at se.krka.kahlua.stdlib.StringLib.sub(StringLib.java:773)
at se.krka.kahlua.stdlib.StringLib.call(StringLib.java:118)
at se.krka.kahlua.vm.KahluaThread.callJava(KahluaThread.java:182)
at se.krka.kahlua.vm.KahluaThread.luaMainloop(KahluaThread.java:1007)
at se.krka.kahlua.vm.KahluaThread.call(KahluaThread.java:163)
at se.krka.kahlua.vm.KahluaThread.pcall(KahluaThread.java:1980)
at se.krka.kahlua.vm.KahluaThread.pcall(KahluaThread.java:1782)
at se.krka.kahlua.integration.LuaCaller.pcall(LuaCaller.java:76)
at se.krka.kahlua.integration.LuaCaller.protectedCall(LuaCaller.java:117)
at zombie.Lua.LuaManager.RunLuaInternal(LuaManager.java:554)
at zombie.Lua.LuaManager.RunLua(LuaManager.java:500)
at zombie.Lua.LuaManager.RunLua(LuaManager.java:486)
at zombie.Lua.LuaManager.LoadDirBase(LuaManager.java:333)
at zombie.Lua.LuaManager.LoadDirBase(LuaManager.java:260)
at zombie.network.GameServer.doMinimumInit(GameServer.java:1417)
at zombie.network.GameServer.main(GameServer.java:705)
LOG : General , 1652978095213> 269.975.947> -----------------------------------------
STACK TRACE
-----------------------------------------
Callframe at: sub
function: insertNutritionistMag -- file: TheNutritionist.lua line # 7
function: TheNutritionist.lua -- file: TheNutritionist.lua line # 32

mag 19, 2022 6:34:55 PM zombie.Lua.LuaManager RunLuaInternal
GRAVE: java.lang.RuntimeException
mag 19, 2022 6:34:55 PM zombie.Lua.LuaManager RunLuaInternal
GRAVE: java.lang.RuntimeException:
mag 19, 2022 6:34:55 PM zombie.Lua.LuaManager RunLuaInternal
GRAVE: at sub
at insertNutritionistMag:7
at TheNutritionist.lua:32