Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/9AVqJJv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a6c7fea8-fb9d-4b36-81c0-d9e0b65d09ef",
      "cw-0363c512-8924-44fe-8065-96cd0c0da98f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-8671ef62-8def-4235-b7d6-5f884ec4f658",
    "manifestId": "https://dam.iuav.it/iuav/containers/9AVqJJv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0363c512-8924-44fe-8065-96cd0c0da98f"
  }
}