Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/RvoDR2A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-fcb23a87-a3f3-4d2f-9e6e-ee9735494dc7",
      "cw-92f67c9e-d5dc-4fcd-9ccf-80e744cbdd6b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-40e89247-4880-408d-96b8-77619e56774f",
    "manifestId": "https://dam.iuav.it/iuav/containers/RvoDR2A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-92f67c9e-d5dc-4fcd-9ccf-80e744cbdd6b"
  }
}