Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/avXOL6Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ddf30839-7b9b-4960-9d45-de9c3453532d",
      "cw-e5115868-b2b6-4b35-af92-7551d2e3e2aa"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-81395881-25f4-4d88-89c6-4013fb653b49",
    "manifestId": "https://dam.iuav.it/iuav/containers/avXOL6Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e5115868-b2b6-4b35-af92-7551d2e3e2aa"
  }
}