Not getting frame images separately

Hi
I’ve written Rest API for images using
https://api.figma.com/v1/images/myfilekey
https://api.figma.com/v1/images/myfilekey?ids=123456
it has multiple frames but it is returning all frames in one image in response
{
“err”: null,
“images”: {
“node-id”: “image-path”
}
}
The image path that is returning , it is correct path but I can’t get all frames separately
But when I change the https://api.figma.com/v1/images/myfilekey to https://api.figma.com/v1/files/myfilekey then I get all frames separately.
How to resolve this issue?