There was a bug reported approximately 7 hours ago on the subreddit, don't know if it made its way here. TLDR: someone was making stations solo inside of an hour without using a carrier, clearly abusing some kind of bug, glitch, exploit or straight up hack. Whatever it is, it's out of office hours for FDev right now, so they can't fix it properly, but they can hit the emergency cutoff switch, which appears to be what they've done.
It's not a bug, it's not a glitch, it's just a messed up situation. They'll fix it tomorrow when they're awake to fix it.
For those worried if they'll still have their system when it's over: I'd expect so. My station's still telling me in the news feed that I'm the system architect. If you have your own station done already, feel free to check and verify that it still says it for you as well.
Most importantly, don't panic! And don't forget your towel either
It's not a bug, it's not a glitch, it's just a messed up situation. They'll fix it tomorrow when they're awake to fix it.
For those worried if they'll still have their system when it's over: I'd expect so. My station's still telling me in the news feed that I'm the system architect. If you have your own station done already, feel free to check and verify that it still says it for you as well.
Most importantly, don't panic! And don't forget your towel either