Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vDWVw7Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c45462b5-b66a-4d65-8417-a13fdf377e01",
      "cw-3702c750-fb8f-4d69-b94a-ab38577edef0"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f15af32d-ea4d-41ca-9dc2-ed09b78adc6c",
    "manifestId": "https://dam.iuav.it/iuav/containers/vDWVw7Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3702c750-fb8f-4d69-b94a-ab38577edef0"
  }
}