Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/2AK927Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f7220718-0ae2-4f7e-a010-d07b7067195a",
      "cw-a00f1571-3881-40ca-b08b-c1d9dc4f3234"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-92d2d51c-1c01-4dcf-a8a3-b93b2b8e3eac",
    "manifestId": "https://dam.iuav.it/iuav/containers/2AK927Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a00f1571-3881-40ca-b08b-c1d9dc4f3234"
  }
}