Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/3ZpN49A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-fc51530a-d075-45ed-b3e1-5fc485275cb8",
      "cw-d62d2b52-f3c7-49b8-836d-49c62ad111b2"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-8038aeee-0e8a-463f-9b3b-49cd3c2780ea",
    "manifestId": "https://dam.iuav.it/iuav/containers/3ZpN49A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d62d2b52-f3c7-49b8-836d-49c62ad111b2"
  }
}