I got this error when click on a factory:
"
Error while running event Actual_Craft_Time::on_gui_opened (ID 83)
..Actual_Craft_Time:control.lua148:attempt to perform arithmetic on field "belt_speed" (a nil value)
stack traceback:
Actual_Craft_Time/control.lua:148 in function "FieldPrototypeData"
Actual_Craft_Time/control.lua:434: in function
<Actual_Craft_Time/control.lua:351>
"
