Updating to 1.20 - "Error: cannot unpack non-iterable Mask object"

[skyv195]

I am trying to do a Generative Fill on an image (Cinematic Photo) but making a selection. But I get this error. I did not have it before 1.20. Where did I go wrong? Appreciate the help. Thank you.

[Acly]

Sounds like it might be a bug, but need a bit more information:

• Are you using managed server install or custom ComfyUI?
• Please provide log files (and console output if you run ComfyUI manually)