This mod is incompatible with the mod: https://mods.factorio.com/mod/spider-launcher
If both mods are loaded together, the following error appears: "Failed to load mods: File base/graphics/icons/uncommon-i.png not found.
Mods to be disabled: * spider-launcher (2.5.0)"
Disabling either mod allows the other to run normally.
I've let the other mod dev know as well. (as per this post: https://mods.factorio.com/mod/spider-launcher/discussion/6820c89e76015c03ee6f9833 I believe it is due to what their mod is doing, not necessarily what your mod is doing... but it may be that both do something similar - generate sprites at runtime. If I'm correct then it may simply be a load order issue, but I'm not a modder and I really don't know.)