Heyho, game crashed after i pressed the OK button in the GUI

[2021-05-31 20:49:45] [5654.687]: Error MainLoop.cpp:1285: Exception at tick 22516617: The mod RPG System (1.1.6) caused a non-recoverable error.
[2021-05-31 20:49:45]: Please report this error to the mod author.[2021-05-31 20:49:45]: Error while running event RPGsystem::on_gui_click (ID 1)
[2021-05-31 20:49:45]: LuaGuiElement API call when LuaGuiElement was invalid.
[2021-05-31 20:49:45]: stack traceback:[2021-05-31 20:49:45] [C]: : in function 'index'
[2021-05-31 20:49:45]: __RPGsystem/control.lua:1302: in function <RPGsystem/control.lua:1274>
[2021-05-31 20:49:45] [5654.687]: Error ServerMultiplayerManager.cpp:91: MultiplayerManager failed: "The mod RPG System (1.1.6) caused a non-recoverable error.
[2021-05-31 20:49:45]: Please report this error to the mod author.[2021-05-31 20:49:45]: Error while running event RPGsystem::on_gui_click (ID 1)[2021-05-31 20:49:45]: LuaGuiElement API call when LuaGuiElement was invalid.
[2021-05-31 20:49:45]: stack traceback:[2021-05-31 20:49:45] [C]: : in function 'index'
[2021-05-31 20:49:45]: __RPGsystem/control.lua:1302: in function <RPGsystem/control.lua:1274>"

Hope it is now fixed

Seems to be one more error when using the {list} tag

The mod RPG System (1.1.7) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event RPGsystem::on_gui_click (ID 1)
LuaGuiElement API call when LuaGuiElement was invalid.
stack traceback:
    [C]: in function '__index'
    __RPGsystem__/control.lua:1302: in function <__RPGsystem__/control.lua:1274>