Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AB0j0OZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7a5d6c48-c1d7-4763-be32-e9a0e44a9e5c",
      "cw-11b905f2-659e-447a-af85-e98c048300c1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-3329a22a-21a6-4d2a-9393-9c4cc2f07156",
    "manifestId": "https://dam.iuav.it/iuav/containers/AB0j0OZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-11b905f2-659e-447a-af85-e98c048300c1"
  }
}