this feature is not available.

Hi @lovememfriend 

Adobe has limited access to the generative fill and generative expand features to customers with a valid subscription to a plan that includes Photoshop ( Creative Cloud, Single app or Photography plan).

Potential customers can try Photoshop and the generative features by signing up for a 7 day trial here - https://www.adobe.com/downloads.html 

If you believe that you have are incorrectly receiving the above error and qualify to use the generative features, please contact technical support.