I am getting the same error when adding a reference image to use it either as a style guide for creating another image or trying to edit image to look similar in style.

Lets say I am prompting something like "Create an image of a business manager leading team of experts. On the background from the windows the cityscape shows as on image [1]."

And this image [1] is something I have added as a reference image to get the same look and feel for the set of images.

Need any more info?

Thanks!

Sam