Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZbQOx5e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a23c67d4-3692-407c-a080-954c53a287df",
      "cw-0f253121-8ea4-4e1e-acba-ab186789545f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-075e0496-5741-4094-a5a9-270a1e340aa5",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZbQOx5e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0f253121-8ea4-4e1e-acba-ab186789545f"
  }
}