Failed to load mods: __sushi-splitters__/prototypes/entity.lua:37: attempt to index field '?' (a nil value)
stack traceback:
    __sushi-splitters__/prototypes/entity.lua:37: in main chunk
    [C]: in function 'require'
    __sushi-splitters__/data-updates.lua:6: in main chunk

Mods to be disabled:
• sushi-splitters (0.2.0)

Happens with https://mods.factorio.com/mod/angelbob-spaceage-rebalance

Cool new mod, the next three weeks I won't be able to look at the failure so a fix might take a while.
In the meantime the mod may gain some more traction. I'm curious about it, sounds good to me.

New version is up. The rebalance mod used SpaceExploration but not the SpaceExploration splitters, so my mod was looking for se-splitters which weren't there.
Adding some code to check if the inserter exists seems to solve the issue.