Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pvl96NA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-13b8276c-04ec-4a5b-af25-f93fa98c1cb2",
      "cw-453ad57c-e2b4-41db-b4e7-8071d8f1af27"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2e578141-1d27-4e64-b514-c2d3ce5f9c25",
    "manifestId": "https://dam.iuav.it/iuav/containers/pvl96NA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-453ad57c-e2b4-41db-b4e7-8071d8f1af27"
  }
}