Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/eg8z1zZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0039acb2-c859-4cec-b6f7-36f2055f61b7",
      "cw-e63ad9d7-ab03-449a-acc1-910cc22e337e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-dd72761e-6894-42ad-b203-2357bee6a612",
    "manifestId": "https://dam.iuav.it/iuav/containers/eg8z1zZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e63ad9d7-ab03-449a-acc1-910cc22e337e"
  }
}