Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e9kLnVv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-947eb19e-a739-44f5-9242-5b75825acb42",
      "cw-7dbeee1a-a26f-4f30-b909-4abb3b1f72b3"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6a5ad1ff-5656-4e10-bd10-4d7ba2ad5052",
    "manifestId": "https://dam.iuav.it/iuav/containers/e9kLnVv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7dbeee1a-a26f-4f30-b909-4abb3b1f72b3"
  }
}