Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vxBw62e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d692c637-16ab-468a-8894-f98141d1cdf8",
      "cw-dae3b59a-2d77-4383-a2ab-2907f86ce052"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ccde9827-9d80-4b6b-8fcd-9dd18e626d93",
    "manifestId": "https://dam.iuav.it/iuav/containers/vxBw62e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-dae3b59a-2d77-4383-a2ab-2907f86ce052"
  }
}