Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v685o6e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ea7f5d29-270b-49d6-b36f-400f99708974",
      "cw-e6365ad6-190b-4aa0-a034-b6953abf2291"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1744e53b-e24b-40db-8e01-902ac9a20118",
    "manifestId": "https://dam.iuav.it/iuav/containers/v685o6e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e6365ad6-190b-4aa0-a034-b6953abf2291"
  }
}