hi just to paste the error here from the comments:

Exception ticking Colmek (at (108, 0, 115)): System.TypeInitializationException: The type initializer for 'Mehni.Misc.Modifications.HarmonyPatches' threw an exception. ---> System.NullReferenceException: Null method for Mehni.RimWorld.4M.Main
at HarmonyLib.PatchProcessor.Patch () [0x00023] in <20181e2d55204880a56a9120ef04a53d>:0
at HarmonyLib.Harmony.Patch (System.Reflection.MethodBase original, HarmonyLib.HarmonyMethod prefix, HarmonyLib.HarmonyMethod postfix, HarmonyLib.HarmonyMethod transpiler, HarmonyLib.HarmonyMethod finalizer) [0x00028] in <20181e2d55204880a56a9120ef04a53d>:0
at Mehni.Misc.Modifications.HarmonyPatches..cctor () [0x001dc] in <ebaaa38b75e54ed7a0753cb80bd09257>:0
--- End of inner exception stack trace ---
at (wrapper dynamic-method) RimWorld.AutoUndrafter.RimWorld.AutoUndrafter.ShouldAutoUndraft_Patch1(RimWorld.AutoUndrafter)
at RimWorld.AutoUndrafter.AutoUndraftTick () [0x00062] in <7b345446a85d4ed599f9c604ae61854b>:0
at RimWorld.Pawn_DraftController.DraftControllerTick () [0x00000] in <7b345446a85d4ed599f9c604ae61854b>:0
at (wrapper dynamic-method) Verse.Pawn.Verse.Pawn.Tick_Patch3(Verse.Pawn)
at (wrapper dynamic-method) Verse.TickList.Verse.TickList.Tick_Patch2(Verse.TickList)
(Filename: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 35)