Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pZ8gVye/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-953a00dc-aed7-4b3d-b244-4abb918d82b6",
      "cw-ab8b3b55-2bef-4942-a755-4250a8a3caf4"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-70609ab2-e8b4-4165-ba45-a2fc7141f69f",
    "manifestId": "https://dam.iuav.it/iuav/containers/pZ8gVye/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ab8b3b55-2bef-4942-a755-4250a8a3caf4"
  }
}