Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vPWQR7Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-69cdee5a-7eb9-4fbf-a55c-db7a30a05430",
      "cw-0c4c1fe7-0054-4a46-bf72-732fe7eec7fe"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2fb16018-8e3c-4287-b186-3bb26c01279a",
    "manifestId": "https://dam.iuav.it/iuav/containers/vPWQR7Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0c4c1fe7-0054-4a46-bf72-732fe7eec7fe"
  }
}