Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/wArOa0e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e39466c3-56bf-4284-b276-7dd37a77eb26",
      "cw-22745e08-f314-4a79-aafb-9ab275cfa5df"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-7b5d1384-c9f7-494f-99bd-fcd7953e9781",
    "manifestId": "https://dam.iuav.it/iuav/containers/wArOa0e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-22745e08-f314-4a79-aafb-9ab275cfa5df"
  }
}