Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/avXOL6Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4dca274b-4d76-4a42-b184-0f26075e915a",
      "cw-973d003b-1cac-4634-910d-a03f1cf62790"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5458a6f9-0499-4336-8fcf-1563b441ff60",
    "manifestId": "https://dam.iuav.it/iuav/containers/avXOL6Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-973d003b-1cac-4634-910d-a03f1cf62790"
  }
}