Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/dvL8y5v/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7c3e192f-9ab0-4267-8e4c-9e469356c780",
      "cw-c1301050-2455-45fb-831f-4f432f5912ed"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4adfb399-a8d3-4e1f-a846-79d6228b21a9",
    "manifestId": "https://dam.iuav.it/iuav/containers/dvL8y5v/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c1301050-2455-45fb-831f-4f432f5912ed"
  }
}