Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZpDBNPZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-3e08616b-9861-4e5a-be7d-17c206696add",
      "cw-35fb997a-5917-4e5a-b8e8-e112c07827ca"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e35b035e-c839-4207-b690-730a3a9e2743",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZpDBNPZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-35fb997a-5917-4e5a-b8e8-e112c07827ca"
  }
}