Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/9ZNx41A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7bf0d7bb-7874-40de-a5c0-794f94932287",
      "cw-52802f9d-9b0a-4be1-88e8-0a9173ae791c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e2e7cb6e-f553-4397-b49e-40656bdce6bf",
    "manifestId": "https://dam.iuav.it/iuav/containers/9ZNx41A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-52802f9d-9b0a-4be1-88e8-0a9173ae791c"
  }
}