I got an error after updating some other mods, FoF is not a value or something like that in control.lua
I commented out the following code and everything loaded fine
-- script.on_configuration_changed(function(event)
-- local FoF = event.mod_changes["First_One_Is_Free"]
-- if FoF.old_version == "0.0.2" then
-- global.opened_changes = global.opened_changes or {}
-- end
-- end)