Feedback Api Issue

[ArabicCalligraphyPnt]

Hi everyone 
I m calling an API for getting feedback from my shop 
My URI is =>  https://openapi.etsy.com/v2/users/:user_id/feedback/as-seller?api_key=&limit=100&page=3

In result, I m receiving responses like :

"feedback_id": ,

            "creation_tsz": ,

            "message": "well made  love them both !",

            "value": 1,

            "seller_user_id": ,

            "transaction_id": ,

            "image_feedback_id": null,

            "image_url_25x25": "https://www.etsy.com/images/grey.gif",

            "image_url_155x125": "https://www.etsy.com/images/grey.gif",

            "image_url_fullxfull": "https://www.etsy.com/images/grey.gif",

            "target_user_id": 

My problem is I m receiving the image URL in gif format like the above mention (https://www.etsy.com/images/grey.gif) for the total API result I m receiving the same URL which is not a proper image.
Is there any solution for it??

[BagmakerSupply]

Presumably that GIF is a placeholder image. Are you receiving this on all your reviews where the buyer has not posted a picture?

[ArabicCalligraphyPnt]

Yes I am receiving these GIF images on all the reviews but on my shop in reviews sections I can See the images but not in in my reviews apis