Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZjlGK0A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-74cdea26-4f45-48d9-a06f-6abbecab6c30",
      "cw-1eef2641-8171-4d53-b894-b65e77e478a9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d87428f5-843d-400c-923b-db1a62a69d39",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZjlGK0A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1eef2641-8171-4d53-b894-b65e77e478a9"
  }
}