So i build an factory from Factorissimo factories and when i try to place something inside i got this

The mod Unfunny Science (0.1.4) caused a non-recoverable headache.
Please return this writing to the mod author for a rework.

Error while running event un-science::on_built_entity (ID 6)
un-science/scripts/atmosphere.lua:15: attempt to index local 'astronomical_object' (a nil value)
stack traceback:
un-science/scripts/atmosphere.lua:15: in function 'on_built'
un-science/control.lua:119: in function <un-science/control.lua:113>

Hope for a fix.

Update for a possible fix

Since Factorissimo2 can create multiple surfaces, so lets do it for the first one only.

The name of the factory surface is "factory-floor-1"

Also it needs to be noted for Factorissimo2 ( notnotmelon fork ) users that this will be working with settings
"Single surface" = true