One or more of your photos is breaking some form of copyright, whether it be that the photos require proper attribution or are licensed in such a way that they are not free to use. For more information, check out this post <a href="https://steemit.com/steemstem/@steemstem/guidelines-on-copyright-standards-in-steemstem">here</a> on steemstem copyright standards.<br><br>Sincerely,<br>@kryzsec