Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/wArOqOe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-93ca4044-9c54-4a75-bc91-90046d27b6cd",
      "cw-fb0dc528-5f37-4efe-899e-1c6e18d811cb"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-576ebf9d-b9aa-4865-9e36-2360438952ac",
    "manifestId": "https://dam.iuav.it/iuav/containers/wArOqOe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fb0dc528-5f37-4efe-899e-1c6e18d811cb"
  }
}