Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AkrN5Mv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-846f410f-dc5f-4b97-8513-f3a786cfee25",
      "cw-2d1b6e37-c191-4654-9daf-194748fcec39"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-8c77857a-f04c-43fa-b338-b0b1187f027c",
    "manifestId": "https://dam.iuav.it/iuav/containers/AkrN5Mv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2d1b6e37-c191-4654-9daf-194748fcec39"
  }
}