Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Jv6NGbv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d8f4feeb-adc4-413a-b2af-de70e240364e",
      "cw-31f44b51-3437-40bb-b448-aa2f2035501f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3be7d6a4-41be-452a-b943-bdc127686490",
    "manifestId": "https://dam.iuav.it/iuav/containers/Jv6NGbv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-31f44b51-3437-40bb-b448-aa2f2035501f"
  }
}