User got this when playing multiplayer, was clicking around in the modules config panel.
1238.224 Script @helmod/controller/DispatcherController.lua:74: LuaGuiElement API call when LuaGuiElement was invalid.
stack traceback:
helmod/gui/GuiElement.lua:568: in function 'setInputText'
helmod/edition/ProductEdition.lua:224: in function 'onEvent'
helmod/core/Form.lua:286: in function 'handler'
helmod/controller/DispatcherController.lua:66: in function <helmod/controller/DispatcherController.lua:56>
[C]: in function 'pcall'
helmod/controller/DispatcherController.lua:56: in function 'send'
helmod/controller/Controller.lua:865: in function 'send'
helmod/controller/Controller.lua:339: in function 'onGuiEvent'
helmod/controller/Controller.lua:320: in function 'handler'
helmod/controller/DispatcherController.lua:66: in function <helmod/controller/DispatcherController.lua:56>
[C]: in function 'pcall'
helmod/controller/DispatcherController.lua:56: in function 'send'
helmod/controller/EventController.lua:257: in function <helmod/controller/EventController.lua:246>