Fixed issue with nil fuels.

src/movescript.lua

@@ -115,6 +115,7 @@ local function refuelAll(settings)
     local refueled = false
     for slot = 1, 16 do
         local item = t.getItemDetail(slot)
+        if item ~= nil then
             for _, fuelName in pairs(fuels) do
                 if item.name == fuelName then
                     t.select(i)
@@ -123,6 +124,7 @@ local function refuelAll(settings)
                 end
             end
         end
+    end
     return refueled
 end