Hey, look at that, google flow gave me a reasonable error message:
“I can’t generate the image you requested right now due to interests of third-party content providers. Please edit your prompt and try again.”
I was generating images of star trek battles and apparetly 1/4 of those images were too adjacent to copyrighted material even though all of them were designed to look like star trek. But hey, I’m happy. That error message makes sense. It’s saying “this is too close to copyrighted works”, I can work with that information. Unlike the “something failed, fuck off” style of messages about my flying humpbacks. So their error system can apparently be specific and useful when it wants to be. It just doesn’t usually want to be.