P: Generative Fill with Nano Banana / Flux fails / “We have encountered an issue” error

Hello,

I’ve been testing the new Nano Banana (Gemini 2.5 Flash Image) and Flux models in Photoshop Beta, but unfortunately, they aren’t working for me. Every time I try to generate with them, Photoshop gives the error “We have encountered an issue and cannot complete your request at this time. Please try again.” Other models seem to work fine, but the two new ones consistently fail.

I’m on a MacBook Air M2 running macOS 26 (latest public release), and using the latest Photoshop Beta build. I’ve attached screenshots showing the issue.

1. Version & environment

• Photoshop Beta version: 27.0.0 (latest beta release)

• Machine: MacBook Air M2

• macOS version: macOS 26.0 (latest public release)

2. Steps to reproduce

1. Open Photoshop Beta
2. Import or open an image
3. Make a selection (e.g. using the selection brush)
4. Invoke Generative Fill
5. Choose the model “Nano Banana / Gemini 2.5 Flash Image” or “Flux”
6. Enter prompt (e.g. “replace blue stripes with red stripes”)
7. Click Generate
8. Observe error: “We have encountered an issue and cannot complete your request at this time. Please try again.”

3. Expected vs Actual result

• Expected: The Generative Fill tool uses the selected model (Nano Banana or Flux) and returns image edits per prompt

• Actual: Shows the generating progress bar but, then shows error message (“We have encountered an issue…”) and fails to generate anything

4. Additional notes

• This happens every time

• Firefly models work perfectly fine as they did before

6. Workarounds tried

• Tried re-launching the app (does not help)

• Tried on a different images & PSDs

• Making sure I'm on the latest Photoshop Beta

• Tried other selection types (lasso, brush, etc.)