Rocket Silo Won't Launch Starter Pack

[Chiefjustice]

Hello. I'm forking Ultracube: Age of Cube to add Space Age features, and my rocket silos are not working.
My source code can be found here: https://gitlab.com/chiefjustice/space-age-ultracube
To reproduce this bug while using the mod, place a rocket silo, make it ready, and try to create a new space platform. The button remains grayed out saying the rocket needs automatic requests or a starter pack even when those conditions are met.
If you create a space platform in the editor, the rocket is perfectly willing to deliver cargo.

Possible causes:
There might be some code in the original Ultracube that breaks the silo. The silo used to be replaced by the experimental teleporter, but I can say with 97% confidence that I have removed all the teleport code.
This might have something to do with Ultracube prefixing every ID with "cube-" meaning the silo doesn't recognize the pack, but I don't know why it wouldn't work with automatic requests.
Perhaps the prototypes are somehow broken, but I haven't touched the prototypes at all, only their recipes and tech unlocks.

If anyone could help me to solve this, I'd greatly appreciate it. I understand it's a somewhat vague problem without even an idea of what code is causing the problem.

[Chiefjustice]

I have resolved my issue.
It turns out that to build space platforms you need to have researched a tech which unlocks them. Adding
{type = "unlock-space-platforms", modifier = true}
to my Lunar Mission tech fixed the problem.

[Amarula]

Thanks for sharing the solution!