Unexpected error while posting photos to page

I am trying to post a photo on a page using the following:

FacebookClient client = new DefaultFacebookClient(destinationAccessToken);
BinaryAttachment attachment = BinaryAttachment.with(imageName, imageInputStream);
Photo photoResponse = client.publish("/me/photos", Photo.class, attachment);

I get the following response:

{
    "error": {
        "message":"An unexpected error has occurred. Please retry your request later.",
        "type":"OAuthException",
        "code":2
    }
}

When I use the same code to post to the user's wall, it works fine.

I also tried sending on "/{page id}/photos"with the same result.

Destination access token has permissions manage_pages, photo_upload, publish_actionsand publish_streamamong others.

What am I doing wrong here?

UPDATE:

If I publish to a predefined album using "/{album id}/photos", then it will work. Quote this post on the Facebook developers blog :

https://graph.facebook.com/USER_ID/photos - , . , . .

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