Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/zegzE2A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7c310921-e792-4c1f-976c-9f01578e3fa3",
      "cw-e7c966d0-d0f1-4ccc-b79c-98e457a93a5f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-77417358-61b3-4949-bbf7-33b0bce926d8",
    "manifestId": "https://dam.iuav.it/iuav/containers/zegzE2A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e7c966d0-d0f1-4ccc-b79c-98e457a93a5f"
  }
}