Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AB0WQ6Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e7a109bf-794d-458b-b03f-da41ca769a93",
      "cw-0a5a5053-7ca0-4d97-a584-ab9eacc5cd3a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-474f81a5-7107-4c97-b862-052878eefef3",
    "manifestId": "https://dam.iuav.it/iuav/containers/AB0WQ6Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0a5a5053-7ca0-4d97-a584-ab9eacc5cd3a"
  }
}