Do you also have image upload issues sometimes? I have posted a screenshot of how it looks when it fails. It is a known bug -> https://github.com/LemmyNet/lemmy-ui/issues/1489
Do you maybe know how to get around it, and still be able to upload the image?
I’d say reupload your image, and if you have more than one image, load the images in the description. It’s faster and won’t give you as many errors.