Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Zq0Y9Le/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8dbb45d6-6faf-47d4-a5be-67903c188fdf",
      "cw-9fcf4a0b-6412-4739-9fbc-a1fa4f38df2a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-dbb5115d-4787-4e78-8272-487bf9f040ff",
    "manifestId": "https://dam.iuav.it/iuav/containers/Zq0Y9Le/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9fcf4a0b-6412-4739-9fbc-a1fa4f38df2a"
  }
}