Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/wAr1xYv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5338a555-d93a-4565-b425-f0e3b6250a1b",
      "cw-abf7d240-4413-444d-b914-f4d2bb9b1539"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-bd0e9a03-90b0-4a95-9f76-5379948f7604",
    "manifestId": "https://dam.iuav.it/iuav/containers/wAr1xYv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-abf7d240-4413-444d-b914-f4d2bb9b1539"
  }
}