The generated images were removed because they violate user guidelines.

[OzDrDj]

I see this is common, but why does it violate anything. My Daughter wanted to be a zombie. I uploaded her picture and asked it "make me into a zombie in a city with other zombies".

If everything is against your guidelines then your system is a waste of time, just remove it from the internet.

[CMass]

Can you share what the prompt was?  Also, if you run into any prompts that you feel were unnecessarily blocked, please share that feedback in the app in the error messages.