Error when hitting apply in options

[DesertLobster]

Describe the bug
Whenever I hit apply in the Options/settings menu this error seems to appear.

To Reproduce
Steps to reproduce the behavior:

1. Enable Mod
2. Click on Options
3. Change any setting
4. Hit apply
5. See error

Logs

=== Zomboid Settings ===
Version: 42.20.4 b0bbce05d5 (Steam)
Mode: SINGLE PLAYER

[x2]
attempted index: getUsername of non-table: null
Lua((MOD:The Only Cure)).OverrideInteractionsKey(CachedDataHandler.lua:191)
    Lua((MOD:The Only Cure)).apply(LimitActionsController.lua:39)
    Lua(Vanilla).onOptionMouseDown(MainOptions.lua:3702)
    Lua(Vanilla).onMouseUp(ISButton.lua:47)
java.lang.RuntimeException: attempted index: getUsername of non-table: null
    at se.krka.kahlua.vm.KahluaThread.tableget(KahluaThread.java:1430)
    at se.krka.kahlua.vm.KahluaThread.luaMainloop(KahluaThread.java:459)
    at se.krka.kahlua.vm.KahluaThread.call(KahluaThread.java:162)
    at se.krka.kahlua.vm.KahluaThread.pcall(KahluaThread.java:1740)
    at se.krka.kahlua.vm.KahluaThread.pcallBoolean(KahluaThread.java:1676)
    at se.krka.kahlua.integration.LuaCaller.protectedCallBoolean(LuaCaller.java:96)
    at zombie.ui.UIElement.onMouseUp(UIElement.java:1411)
    at zombie.ui.UIElement.onMouseUp(UIElement.java:1384)
    at zombie.ui.UIElement.onMouseUp(UIElement.java:1384)
    at zombie.ui.UIElement.onConsumeMouseButtonUp(UIElement.java:1474)
    at zombie.ui.UIManager.updateMouseButtons(UIManager.java:747)
    at zombie.ui.UIManager.update(UIManager.java:621)
    at zombie.GameWindow.logic(GameWindow.java:347)
    at zombie.GameWindow.frameStep(GameWindow.java:790)
    at zombie.GameWindow.mainThreadStep(GameWindow.java:567)
    at zombie.MainThread.mainLoop(MainThread.java:69)
    at java.base/java.lang.Thread.run(Unknown Source)

Additional context
Add any other context about the problem here.

[ZioPao]

This doesn't do anything, but it's still a bug