Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v2Dq2ke/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e10988f8-d385-4209-a9c8-394b395552f2",
      "cw-8fdd07b0-f6d3-41fc-88bb-96fb5fc50b7c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e1efc1a2-a3f0-454b-bf3f-6217a833caa8",
    "manifestId": "https://dam.iuav.it/iuav/containers/v2Dq2ke/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8fdd07b0-f6d3-41fc-88bb-96fb5fc50b7c"
  }
}