Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/dvDVVde/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-84b160ed-cf0d-4007-b2f1-986a6372ae79",
      "cw-0f57677b-8b14-4eaf-bc00-9b7fca0ef352"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-54ae5ae3-b65a-4070-87d4-1f67b8ae218a",
    "manifestId": "https://dam.iuav.it/iuav/containers/dvDVVde/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0f57677b-8b14-4eaf-bc00-9b7fca0ef352"
  }
}