Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/nZbYQwe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9096d882-5d7e-47d4-ab46-41b4c65b82fb",
      "cw-82bd372a-fe88-4b95-b16c-b0d14a0b3763"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6673268a-8b25-4076-b6a8-92316b0c02b6",
    "manifestId": "https://dam.iuav.it/iuav/containers/nZbYQwe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-82bd372a-fe88-4b95-b16c-b0d14a0b3763"
  }
}