Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/avXOM6Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-39a01358-065d-40a3-8b15-d32c1bd80540",
      "cw-69e80b13-34a6-4a87-b1b3-006b1896e50a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fdb13f84-cbdb-4772-928f-b3f56d05ef36",
    "manifestId": "https://dam.iuav.it/iuav/containers/avXOM6Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-69e80b13-34a6-4a87-b1b3-006b1896e50a"
  }
}