Thread:Project:Support desk/Gallery tag and not existing images. Perhaps, a custom placeholder?

Hi.

Is it possible to specify how not existing images should be displayed for the  tag? Currently the tag just renders file names if the respective images are not found in my MediaWiki instance. I would like to change that placeholder to a custom one, showing something like a default image with an upload prompt (for example, a JPEG/PNG with "no image found" depicted). Is it possible or should I use another extension?

Thanks!