Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vDWgGdZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7e1ab488-a764-41a0-806f-a3da7b74565c",
      "cw-a11f2cf0-1136-4f38-b7db-ed8fcb8fde79"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9046ac5f-1c15-4ba5-8705-13e837e83e87",
    "manifestId": "https://dam.iuav.it/iuav/containers/vDWgGdZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a11f2cf0-1136-4f38-b7db-ed8fcb8fde79"
  }
}