Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vDWkRnZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1a4cbb30-e9cd-4c19-88ef-3ed96bd19abd",
      "cw-fc524483-01ab-4aa8-a4f2-e41553532d55"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2f957e4f-d420-4a36-89b9-bb047fc6d941",
    "manifestId": "https://dam.iuav.it/iuav/containers/vDWkRnZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fc524483-01ab-4aa8-a4f2-e41553532d55"
  }
}