Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Rvoq1we/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b7e6046e-c8c0-4880-9036-646f513b801b",
      "cw-7a514ac1-ada0-42ac-bbc7-2a39a4c58d29"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b770f48f-c194-46ce-b584-a0eb805ec0f5",
    "manifestId": "https://dam.iuav.it/iuav/containers/Rvoq1we/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7a514ac1-ada0-42ac-bbc7-2a39a4c58d29"
  }
}