Failed to load mods: Error while running setup for entity prototype "adamo-cinefaction-reaction-kettle" (assembling-machine): Invalid fluid pipe connections: connections must all be at least 1 tile distance from each other.
assembling-machine fluidbox 1 connection 1 ends up being the same tile as assembling-machine fluidbox 1 connection 2.

Mods to be disabled:
• adamo-cinefaction
• assembler-pipe-passthrough
• attach-notes
• Will-o-the-Wisps_updated

All of the fluid connections in my definition are valid. Looks to me like assembler-pipe-passthrough is trying to add more pipe connections to the reaction kettle prototype, causing a collision. Sorry, but there's nothing I can change in my prototype to fix this without reducing functionality of the machine. I'm not sure why EnigmaticAussie thinks it's a good idea to apply passthrough pipes to all assembling machine prototypes (I just confirmed in his code he is doing this), but this seems like a bad idea because it is bound to cause exactly this problem. My mod will have to be black-listed on his end for you to be able to use both mods at the same time. Thanks for letting me know.

Thank you for the quick and detailed reply. I'll request that he blacklist your mod!

but this seems like a bad idea because it is bound to cause exactly this problem

That is also why the blacklist exists.

https://mods.factorio.com/mod/assembler-pipe-passthrough/faq

I'll add that on the next update, EnigmaticAussie.