While using the mod, one of our players clicked on the RPGMode Icon, and our server crashed:

 941.759 Error MainLoop.cpp:1395: Exception at tick 19853716: The mod RPG System (1.3.4) caused a non-recoverable error.

Please report this error to the mod author.

Error while running event RPGsystem::on_gui_click (ID 1)

__RPGsystem__/control.lua:40: attempt to compare nil with number

stack traceback:

    __RPGsystem__/control.lua:40: in function 'RPG_format_number'

    __RPGsystem__/control.lua:591: in function 'update_char_panel'

    __RPGsystem__/control.lua:868: in function 'expand_char_gui'

    __RPGsystem__/control.lua:826: in function 'open_close_char_gui'

    __RPGsystem__/control.lua:1168: in function <__RPGsystem__/control.lua:1161>

 941.759 Error ServerMultiplayerManager.cpp:92: MultiplayerManager failed: "The mod RPG System (1.3.4) caused a non-recoverable error.

Please report this error to the mod author.

Error while running event RPGsystem::on_gui_click (ID 1)

__RPGsystem__/control.lua:40: attempt to compare nil with number

stack traceback:

    __RPGsystem__/control.lua:40: in function 'RPG_format_number'

    __RPGsystem__/control.lua:591: in function 'update_char_panel'

    __RPGsystem__/control.lua:868: in function 'expand_char_gui'

    __RPGsystem__/control.lua:826: in function 'open_close_char_gui'

    __RPGsystem__/control.lua:1168: in function <__RPGsystem__/control.lua:1161>"

 941.759 Info ServerMultiplayerManager.cpp:813: updateTick(19853716) changing state from(InGame) to(Failed)

We have the following mods on our server:

https://gist.github.com/Scarjit/b26b3eb4b76ec4a5919c95d2768fe0af

Regards