Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/pvlWm1Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-86b416e7-9cb8-4ee6-91f0-69a98e7efdbb",
      "cw-a2a1187c-f569-4fd4-8e29-3a0a567bf66b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-95fa5a23-603c-47ba-826c-cccc79ad84dc",
    "manifestId": "https://dam.iuav.it/iuav/containers/pvlWm1Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a2a1187c-f569-4fd4-8e29-3a0a567bf66b"
  }
}