Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/voYbROe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-19e630e2-e761-4111-bd5b-b27512a56dd8",
      "cw-9e412cd9-df5d-45db-b1fb-b3dcdf288632"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a142b02f-c559-4557-b20f-809e0a8a22bf",
    "manifestId": "https://dam.iuav.it/iuav/containers/voYbROe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9e412cd9-df5d-45db-b1fb-b3dcdf288632"
  }
}