Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Ye0KwgA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5f5831a1-c3f2-473d-9e2c-b7ea16459e36",
      "cw-cfe2e13a-7e6c-46ce-a9c2-7d2e5dc8a7b2"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-aa7a3d3d-5c6d-4b41-ab60-d306645b8f87",
    "manifestId": "https://dam.iuav.it/iuav/containers/Ye0KwgA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-cfe2e13a-7e6c-46ce-a9c2-7d2e5dc8a7b2"
  }
}