Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Akrbl7v/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d6471b94-efe4-4d6d-b1d9-86b97f1ba03d",
      "cw-f56db960-79ab-4be8-bbd6-ded318be900b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e666a9d7-c9fc-44ec-ba61-363194d52d11",
    "manifestId": "https://dam.iuav.it/iuav/containers/Akrbl7v/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f56db960-79ab-4be8-bbd6-ded318be900b"
  }
}