Failed to load mods: Technology cerys-cargo-drops: there is no lab that will accept all of the science packs this technology requires.
Science packs: automation-science-pack, logistic-science-pack, restaurant-science-pack, utility-science-pack, cerys-science-pack

I believe it has something to do with how you add sciences to labs as this mod has some planet specific stuff,

For reference, this happened with another mod:
https://mods.factorio.com/mod/Cerys-Moon-of-Fulgora/discussion/676a382a9092b02711e000e2

fixed

How was this fixed? I can still reproduce. the id for the other science pack is cerysian-science-pack and I see you've added cerys-science-pack to the exclusion list

add cerysian-science-pack in 1.31