Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/7AzJPjA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-02dec8cd-b13b-4931-9e19-da4d89926abf",
      "cw-956fc338-f34e-4e5f-bf66-15c1ffa00707"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-5fb75376-fb87-4989-ab62-29aff2ba68b5",
    "manifestId": "https://dam.iuav.it/iuav/containers/7AzJPjA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-956fc338-f34e-4e5f-bf66-15c1ffa00707"
  }
}