Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZYzWNav/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-33b88dc7-bb3d-4840-a318-fed92d6d73db",
      "cw-10aed3ae-429a-407f-b28b-bdcfb5c304ab"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-168dff0c-77c0-49d1-9cf3-03a9fc7daa23",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZYzWNav/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-10aed3ae-429a-407f-b28b-bdcfb5c304ab"
  }
}