Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Zq01V6e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b1a5b727-5009-467a-9af1-fe43a740d398",
      "cw-ba877736-844c-44b5-b6b7-a71a2dce8473"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-027ac6f0-ba99-442c-8043-3393a814abbe",
    "manifestId": "https://dam.iuav.it/iuav/containers/Zq01V6e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ba877736-844c-44b5-b6b7-a71a2dce8473"
  }
}