Service hangs while generating but eats up credits.

I was doing some image finetuning with generative fill for adding / subtracting elements to the image, and extending edges, but Firefly has been hanging 2 out of 3 attempts. It just stalls at 'generating...' and after 5 to 10 mins of no response I have to cancel and retry. However, the credits are still being used. Must have burnt thru almost 10 credits on generating nothing today.