Hey! Thanks for the bug report!
No need for further troubleshooting, luckily I was able to find it and fix it pretty quickly. The fix should be online momentarily.
One thing to note - you shouldn't send the panels to a platform, instead when you load a solar panel into a silo you should get "Orbit" as a destination to deliver to:
The bug was the Orbit destination missing, but it should work fine now. Let me know if there are any more issues with it.