Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vxBwKEe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b68886ce-a61b-47e3-ad3d-54b1be6be9f7",
      "cw-c329f87e-d040-4ad7-9e10-bfc00afc869c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a5264987-8d89-4607-b634-53d125feadd9",
    "manifestId": "https://dam.iuav.it/iuav/containers/vxBwKEe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c329f87e-d040-4ad7-9e10-bfc00afc869c"
  }
}