This error presented itself when I double-clicked quickly on the check sign after setting a new requester item on a multiplayer server:
55285.799 Error MainLoop.cpp:1285: Exception at tick 76230773: The mod LTN Combinator Modernized (1.0.0) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event LTN_Combinator_Modernized::on_gui_click (ID 1)
LTN_Combinator_Modernized/script/gui.lua:96: attempt to index field '?' (a nil value)
stack traceback:
LTN_Combinator_Modernized/script/gui.lua:96: in function 'set_new_signal_value'
LTN_Combinator_Modernized/script/gui.lua:305: in function 'handler'
flib/gui.lua:390: in function <flib/gui.lua:376>
55285.800 Error ServerMultiplayerManager.cpp:91: MultiplayerManager failed: "The mod LTN Combinator Modernized (1.0.0) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event LTN_Combinator_Modernized::on_gui_click (ID 1)
LTN_Combinator_Modernized/script/gui.lua:96: attempt to index field '?' (a nil value)
stack traceback:
LTN_Combinator_Modernized/script/gui.lua:96: in function 'set_new_signal_value'
LTN_Combinator_Modernized/script/gui.lua:305: in function 'handler'
flib/gui.lua:390: in function <flib/gui.lua:376>"