Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Zq0o4Xe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d7aa8343-3e7c-43d1-a847-1a2f099ea578",
      "cw-4ebf3389-e718-4fce-bf03-d8b1daecab16"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f6c551cf-d040-42fa-bc2e-dc02a2f13554",
    "manifestId": "https://dam.iuav.it/iuav/containers/Zq0o4Xe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4ebf3389-e718-4fce-bf03-d8b1daecab16"
  }
}