Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/dvLLEyv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0cfaaa4d-da2e-49e7-a755-39891739cc03",
      "cw-22089683-4c46-4415-b42f-e8c66d49ee94"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-7f26c0ce-d0b3-4efd-a1fa-2feff4624ca5",
    "manifestId": "https://dam.iuav.it/iuav/containers/dvLLEyv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-22089683-4c46-4415-b42f-e8c66d49ee94"
  }
}