I have a problem with viewing images at my wiki using Mediaviewer
So the images added to the article from commons they are fine, but images uploaded to the server cannot be seen - I have a message with error that message cannot be viewed.
You can see it here: https://wikireshebnik.ru/index.php/%D0%92%D0%B8%D0%BA%D0%B8%D1%80%D0%B5%D1%88%D0%B5%D0%B1%D0%BD%D0%B8%D0%BA:%D0%9F%D0%B5%D1%81%D0%BE%D1%87%D0%BD%D0%B8%D1%86%D0%B0
Could someone help me to resolve the problem?