Hints for supertux in universe

Warnings

• asv-screenshot-no-media
  supertux2.appdata.xml:39 -
  A screenshot must contain at least one image or video in order to be useful. Please add an <image/> to it.
• asv-screenshot-no-media
  supertux2.appdata.xml:38 -
  A screenshot must contain at least one image or video in order to be useful. Please add an <image/> to it.
• asv-screenshot-no-media
  supertux2.appdata.xml:37 -
  A screenshot must contain at least one image or video in order to be useful. Please add an <image/> to it.
• asv-screenshot-no-media
  supertux2.appdata.xml:36 -
  A screenshot must contain at least one image or video in order to be useful. Please add an <image/> to it.
• asv-screenshot-no-media
  supertux2.appdata.xml:35 -
  A screenshot must contain at least one image or video in order to be useful. Please add an <image/> to it.
• screenshot-download-error
  Error while downloading screenshot from 'https://www.supertux.org/images/0_6_0/0_6_0_1.png': Failed to download file: Could not resolve host: www.supertux.org
  This might be a temporary server issue, or the screenshot is no longer available.