Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vQnryMA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-54974b27-f969-451d-8719-c7d59c8eca03",
      "cw-91de8b8b-c27f-4520-b6f4-a3196542bb5d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4609b5ff-c422-407d-8175-00be4380a2a7",
    "manifestId": "https://dam.iuav.it/iuav/containers/vQnryMA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-91de8b8b-c27f-4520-b6f4-a3196542bb5d"
  }
}