Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/EZnGzMv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e654bc69-2cf6-422c-a412-c935ffedf7b4",
      "cw-7931947c-4023-4c38-a297-16e143bdb1cc"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3f3d3705-b8f7-4da7-b963-99c479bffe20",
    "manifestId": "https://dam.iuav.it/iuav/containers/EZnGzMv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7931947c-4023-4c38-a297-16e143bdb1cc"
  }
}