Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/9ZNPr4A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2be73010-19ec-4cb3-bd71-727e715e415d",
      "cw-08642313-c28a-44c8-bb5d-9e3ab4633817"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f573cc62-fe56-48d2-b89b-96d854ba9165",
    "manifestId": "https://dam.iuav.it/iuav/containers/9ZNPr4A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-08642313-c28a-44c8-bb5d-9e3ab4633817"
  }
}