Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Awqj8lZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-63032b73-7ea9-488d-8fc7-39ca167b30ad",
      "cw-16126a5f-6c1b-4682-8d19-19452853ca42"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f8af18bd-52ba-4bb6-816a-5773337849cc",
    "manifestId": "https://dam.iuav.it/iuav/containers/Awqj8lZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-16126a5f-6c1b-4682-8d19-19452853ca42"
  }
}