After updating multiple mods, K2 spaced out causes an error, stating that it cannot find the molten rare metals from lava PNG. It persists even with only the dependencies this mod has. I don't know if it's a compatibility issue after the update to the other mods, but it goes away after disabling this mod.

Error message:
Failed to load mods: File__Krastorio2-spaced-out__/graphics/icons/molten-rare-metals.png not found

Mods to be disabled:
Krastorio2_Vulcanus_Start_Main_Base (1.1.3)
Krastorio2-spaced--out (1.5.11)
Flare Stack (4.0.3)