Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e9kqx3v/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4b542d73-70d6-47b6-afd4-06157d5fc92d",
      "cw-c9b82351-7cf3-4f60-8998-e9e1b6312867"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b67ae3d6-ef92-4b4d-bf26-21315bde0366",
    "manifestId": "https://dam.iuav.it/iuav/containers/e9kqx3v/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c9b82351-7cf3-4f60-8998-e9e1b6312867"
  }
}