Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Be5NNMZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-256d0171-cb70-4c58-8f6c-4f8e1bdeb68f",
      "cw-0bbbddb1-c756-4fbe-8843-cc77f7e4057a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fdd742e4-1697-48b6-a58e-56590fa7be83",
    "manifestId": "https://dam.iuav.it/iuav/containers/Be5NNMZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0bbbddb1-c756-4fbe-8843-cc77f7e4057a"
  }
}