Images disappeared from existing Figma file and version history

Images that were previously visible in my files have disappeared. The original layers still exist and can be selected on the canvas. The Fill is still identified as an Image fill, but the image itself is missing and the image preview is blank.

I also checked versions of the file from Version History where these images were previously visible, but the images are now missing from those historical versions as well.

The layers themselves have not disappeared, only the image assets/fills appear to be missing.

Is it possible for Figma Support to recover or restore the original image assets associated with these layers?