Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v2DE7Qe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e7858e43-e5c9-40fc-bebd-71322011e3c5",
      "cw-52dd273d-8210-4802-a1b4-f1a323fb4fed"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-afec65ca-e735-43a3-a6d6-1188471bd8e5",
    "manifestId": "https://dam.iuav.it/iuav/containers/v2DE7Qe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-52dd273d-8210-4802-a1b4-f1a323fb4fed"
  }
}