Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Beyj14Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4ee49aff-5f9f-4a20-b6cb-8752e780eea5",
      "cw-534994b5-ad71-4290-a6b3-0a4c5aa6250a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-316d8090-908c-491e-a285-b74a31ec9d71",
    "manifestId": "https://dam.iuav.it/iuav/containers/Beyj14Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-534994b5-ad71-4290-a6b3-0a4c5aa6250a"
  }
}