Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AKKpJBA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-221dc3dc-4c67-45fc-a89b-2f1cc021c7f4",
      "cw-2b2685ee-6eed-45b1-93a4-d46a0d62f67b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e900737d-52f6-4e66-9eb9-2a2a9aa2c12c",
    "manifestId": "https://dam.iuav.it/iuav/containers/AKKpJBA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2b2685ee-6eed-45b1-93a4-d46a0d62f67b"
  }
}