Keap landing page social share settings - Facebook showing errors on the image used

Facebook’s debug tool gave an error for Keap landing page that is being used on a post

“Provided og:image, could not be downloaded. This can happen due to several different reasons such as your server using unsupported content-encoding. The crawler accepts deflate and gzip content encodings.”

Is this a bug or is there something that we can do to fix this?