https://mods.factorio.com/mod/infinite-quality-tiers-plus conflicts with this mod... specifically, it gives the error: "Failed to load mods: File base/graphics/icons/uncommon-i.png not found.
Mods to be disabled:
* spider-launcher (2.5.0)"
I'm fairly sure the reason for this is the dynamically generated scaled qualities generated by Infinite Quality Tiers Plus (I don't know about the other version by the same name, but without the plus).
i.e. the PNG file Uncommon-i probably doesn't exist in the literal sense when this mod is trying to access it.
Sadly, no idea how to fix it unless its as simple as an "optional" dependency for load order, but I'm unsure if that will "fix" the problem or not.
Anyway, I thought you should know.