Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/RABOOye/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ebff5238-610a-48ab-a1e3-185175a38cf9",
      "cw-779552ba-3bde-4b53-bdd6-fbcb9f14a58c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9ed4fec7-494f-46cf-9bf2-3dd8f6734999",
    "manifestId": "https://dam.iuav.it/iuav/containers/RABOOye/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-779552ba-3bde-4b53-bdd6-fbcb9f14a58c"
  }
}