Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Zpwo4me/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f06809eb-bf39-45dc-bf62-6887c10e973b",
      "cw-e618599d-37c4-408d-b8d7-3dc319524a6b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-eb90a8d2-4bdb-4228-bfeb-8583ab7c34d2",
    "manifestId": "https://dam.iuav.it/iuav/containers/Zpwo4me/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e618599d-37c4-408d-b8d7-3dc319524a6b"
  }
}