Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZjERY5e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7bfa9aaf-17fd-499c-8a3d-93a935f4aadc",
      "cw-564c8bbb-674a-41ac-af2a-014802b38952"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2b72cd24-7547-4301-9e50-784dca7ebba7",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZjERY5e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-564c8bbb-674a-41ac-af2a-014802b38952"
  }
}