Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/dZY4mae/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6b302887-09e1-4e52-8c2c-9cd62758e1fd",
      "cw-e52f0fcc-e14d-4424-8619-46b00a390a94"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c9ab757d-8cbb-4c96-8968-16d6f92b5091",
    "manifestId": "https://dam.iuav.it/iuav/containers/dZY4mae/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e52f0fcc-e14d-4424-8619-46b00a390a94"
  }
}