Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vaXpPRZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9c7c1501-238b-4630-9d06-3815a725ee98",
      "cw-0930da6c-3612-46be-baa6-19bc0414f3b1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9c5f2706-7764-4d71-bbc1-f57133adaab1",
    "manifestId": "https://dam.iuav.it/iuav/containers/vaXpPRZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0930da6c-3612-46be-baa6-19bc0414f3b1"
  }
}