Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AB09E4Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-597a8474-44b2-413b-ae5d-ca5dc8f17510",
      "cw-8d397010-7d4c-45a1-a7a8-a4f4bde14811"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5d0abbe4-4b0d-4fcf-bb83-231e3d4f1b86",
    "manifestId": "https://dam.iuav.it/iuav/containers/AB09E4Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8d397010-7d4c-45a1-a7a8-a4f4bde14811"
  }
}