Automatic gas station stopped detecting gas tank

Went up to gas station, picked a gas pump, filled a container to full (some gas was left), wanted rest of my money back.
Using the automatic gas console showed popup “Failure! No gas tank found”. The big sealed tank with gasoline wasn’t damaged or moved in any way.
All other gas consoles on the station say the same thing. The active gas pump is still active and can be used to fill containers.

Did you transfer all the available gas into your gas pump with the terminal?

I don’t know, but it’s possible. After the transaction my cash card reads 39011 and I picked the suggested number of gas units (maximum?).
The number of transferred units was something around 390-400, I think.