Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pZ8rGyA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e0c912ef-531f-4b4f-a4f1-56ee501f00ea",
      "cw-6e7af08d-f768-4f1e-a0c7-86e16c004673"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cef4608b-c63b-4ac6-a28c-5cf9ed5d38e4",
    "manifestId": "https://dam.iuav.it/iuav/containers/pZ8rGyA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6e7af08d-f768-4f1e-a0c7-86e16c004673"
  }
}