System.NullReferenceException Error

[Erosensei69]

12:50:51 PM.929 (  0 FPS)	[INFO] [NeosModLoader] E:\Neos\app\Libraries\NeosModLoader.config is missing! This is probably fine.
12:50:51 PM.930 (  0 FPS)	[INFO] [NeosModLoader] loading assemblies from nml_libs
12:50:51 PM.945 (  0 FPS)	[INFO] [NeosModLoader] Loaded libraries from nml_libs:
0Harmony, Version=2.2.2.0, Culture=neutral, PublicKeyToken=null Sha256=6928F117D52C0683C44683C0656CD5A345D21AA45720B11C64DC72A35771CAC5
12:50:51 PM.946 (  0 FPS)	[INFO] [NeosModLoader] NeosModLoader v1.12.6 starting up!
12:50:51 PM.946 (  0 FPS)	[INFO] [NeosModLoader] CLR v4.0.30319.42000
12:50:51 PM.946 (  0 FPS)	[INFO] [NeosModLoader] Using Harmony v2.2.2.0
12:50:51 PM.946 (  0 FPS)	[INFO] [NeosModLoader] Using BaseX v1.0.0.0
12:50:51 PM.946 (  0 FPS)	[INFO] [NeosModLoader] Using FrooxEngine v2022.1.28.1310
12:50:51 PM.946 (  0 FPS)	[INFO] [NeosModLoader] Using Json.NET v11.0.0.0
12:50:52 PM.155 (  0 FPS)	[INFO] [NeosModLoader] Compatibility hash spoofing succeeded
12:50:52 PM.156 (  0 FPS)	[INFO] [NeosModLoader] loading assemblies from nml_mods
12:50:52 PM.185 (  0 FPS)	[INFO] [NeosModLoader] loaded mod [Peffin/1.0.0] (Peffin.dll) by dfgHiatus with 256hash: 05B263B94D02ED6B08BE56F46D963B133337E41B2225EF65B2B5E56598A9BF03
12:50:52 PM.294 (  0 FPS)	[ERROR][NeosModLoader] mod Peffin from E:\Neos\app\nml_mods\Peffin.dll threw error from OnEngineInit():
System.NullReferenceException: Object reference not set to an instance of an object
  at Peffin.Peffin.OnEngineInit () [0x00000] in <59b8f14092974282be19c5a6c97e7056>:0 
  at NeosModLoader.ModLoader.HookMod (NeosModLoader.LoadedNeosMod mod) [0x00078] in <12833d5d0793412ca8252021544de084>:0 

This happens even after unblocking all the DLL's and stuff. Pico4 itself is working in Neos.

[Erosensei69]

Tested both on Steam Version and Non-steam, and on 2 different PC's, getting the same error