At what exact moment does this error occur? When you click on the input field? When you enter the first character? Or when you’ve already entered the text and press "apply"?
just recently, I tried to install, but I ran into the same problem. And I always installed it through itch. io.
NullReferenceException: Object reference not set to an instance of an object.
UnityEngine.InputSystem.InputManager.FireStateChangeNotifications (System.Int32 deviceIndex, System.Double internalTime, UnityEngine.InputSystem.LowLevel.InputEvent* eventPtr) (at <00000000000000000000000000000000>:0)
UnityEngine.InputSystem.InputManager.FireStateChangeNotifications () (at <00000000000000000000000000000000>:0)
UnityEngine.InputSystem.Utilities.DelegateHelpers.InvokeCallbacksSafe (UnityEngine.InputSystem.Utilities.CallbackArray`1[System.Action]& callbacks, Unity.Profiling.ProfilerMarker marker, System.String callbackName, System.Object context) (at <00000000000000000000000000000000>:0)
UnityEngine.InputSystem.InputManager.OnBeforeUpdate (UnityEngine.InputSystem.LowLevel.InputUpdateType updateType) (at <00000000000000000000000000000000>:0)
Cores.InputCore.Tick (System.Single delta) (at <00000000000000000000000000000000>:0)
Core.Controller.Tick (System.Single delta) (at <00000000000000000000000000000000>:0)
UpdateCore.Tick (System.Single delta) (at <00000000000000000000000000000000>:0)
UnityEngine.InputSystem.InputManager:OnBeforeUpdate(InputUpdateType)
Cores.InputCore:Tick(Single)
Core.Controller:Tick(Single)
UpdateCore:Tick(Single)
or
NullReferenceException while executing 'InputSystem.onBeforeUpdate' callbacks
#0 0x71eb8b446c (libunity.so) ? 0x0
#1 0x71ebf47560 (libunity.so) ? 0x0
#2 0x71eb561998 (libunity.so) ? 0x0
#3 0x71eb5618a8 (libuni
ty.so) ? 0x0
#4 0x71ea17d8a8 (libil2cpp.so) ? 0x0
#5 0x71e9d0d3c0 (libil2cpp.so) ? 0x0
#6 0x71e9d8292c (libil2cpp.so) ? 0x0
#7 0x71e6445fd8 (libil2cpp.so) ? 0x0
#8 0x71e6445f24 (libil2cpp.so) ? 0x0
#9 0x71eb7f2838 (libunity.so) ? 0x0
#10 0x71eb8068f4 (libunity.so) ? 0x0
#11 0x71eb8c3528 (libunity.so) ? 0x0
#12 0x71eb949a14 (libunity.so) ? 0x0
#13 0x71e65cf228 (libil2cpp.so) ? 0x0
#14 0x71e65e5e10 (libil2cpp.so) ? 0x0
#15 0x71e64e62fc (libil2cpp.so) ? 0x0
#16 0x71e6445fd8 (libil2cpp.so) ? 0x0
#17 0x71e6445f24 (libil2cpp.so) ? 0x0
#18 0x71eb7f2838 (libunity.so) ? 0x0
#19 0x71eb8068f4 (libunity.so) ? 0x0
#20 0x71eb81221c (libunity.so) ? 0x0
#21 0x71eb60a638 (libunity.so) ? 0x0
#22 0x71eb6df020 (libunity.so) ? 0x0
#23 0x71eb6df060 (libunity.so) ? 0x0
#24 0x71eb6df304 (libunity.so) ? 0x0
#25 0x71eb89b604 (libunity.so) ? 0x0
#26 0x71eb89c588 (libunity.so) ? 0x0
#27 0x724664a95c (base.odex) ? 0x0