Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v68Pzbe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1eeefb95-ae26-4afa-90af-333f533fd5de",
      "cw-7636c6d8-8045-4833-8409-173a90143f00"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0d453026-cab0-42c0-a4f4-00e01e620fbd",
    "manifestId": "https://dam.iuav.it/iuav/containers/v68Pzbe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7636c6d8-8045-4833-8409-173a90143f00"
  }
}