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-dc65def3-4965-4ca4-b311-66a58accd2ce",
      "cw-6a63bd49-2fcc-4ae1-aa0d-0b5e203d149d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0a340e30-6cca-41e9-a57a-fa8daddc7722",
    "manifestId": "https://dam.iuav.it/iuav/containers/2AK927Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6a63bd49-2fcc-4ae1-aa0d-0b5e203d149d"
  }
}