Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/7AzNqjA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d3888176-1614-4788-86be-6f5cc4d9d09d",
      "cw-6aa5fe81-56a0-44a1-b8a8-341760efb6cf"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-71bd00a1-6206-4d98-b1e0-5810303fd63f",
    "manifestId": "https://dam.iuav.it/iuav/containers/7AzNqjA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6aa5fe81-56a0-44a1-b8a8-341760efb6cf"
  }
}