firefly upscale

I am using Photoshop 27.7.0 and have a Creative Suite Pro subscription. Since yesterday, the Firefly Upscale feature has stopped working and immediately displays the following error message:

“Something went wrong and your request cannot be completed at this time. Please try again.”

The image I am trying to upscale is not too large, it is a JPG, and it uses the sRGB color space. Generative Fill works without any issues. The problem only occurs with the Upscale feature.

I have already restarted Photoshop and even rebooted my entire computer, but unfortunately neither solution helped.

Any help would be greatly appreciated. Thanks in advance!