I am trying through my application to retrieve the value of thumbnail property and display the image. I don't know the structure of the URI in order to create the link for the image. So I went to the page of the resources (example: http://live.dbpedia.org/page/Henrik_Ibsen => wiki-commons:Special:FilePath/Henrik_Ibsen_by_Gustav_Borgen_NFB-19778_restored.jpg?width=300) and I clicked on the link of the value of thumbnail property but it takes me to an 404 page (error, page do not exist). All of them takes to the same error page. Is it a problem with DBpedia? do you know to which URI I should append the value of thumbnail to (in order to get the link for the actual image) ?
Other examples of inaccessible DBpedia thumbnails:
Worth noting – these are not DBpedia images. They are Wikipedia images, to which DBpedia just provides links. The reported issue appears to have been with WIkipedia/Wikimedia, not DBpedia. Also, this question was echoed on StackOverflow.
http://commons.wikimedia.org/wiki/Special:FilePath/Henrik_Ibsen_by_Gustav_Borgen_NFB-19778_restored.jpg?width=300 does exist for me. Maybe this was a temporary problem at Wikimedia Commons?
I have checked the photo of Ibsen, as well as the other links, with an HEAD requests, and they all returned the 200 OK response code.
curl -I https://upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Agustin_de_Iturbide_y_Green.jpg/300px-Agustin_de_Iturbide_y_Green.jpgHTTP/1.1 200 OK
Maybe it was only a temporary problem.