Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AOKRN3A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4c090363-a916-47b6-bdf6-8a439a645f32",
      "cw-a0443f71-66ba-4cfe-b2e1-fa6732f30c5c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a79f4023-2dba-4293-baa6-4d0aa322631f",
    "manifestId": "https://dam.iuav.it/iuav/containers/AOKRN3A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a0443f71-66ba-4cfe-b2e1-fa6732f30c5c"
  }
}