Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZjlrbyA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c3b7e603-5d8f-484a-84c2-bffeb11638e6",
      "cw-c8774d04-7431-4ee4-aa58-f1562c93bc08"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4f32d229-da93-41cf-b351-4359ea6615f3",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZjlrbyA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c8774d04-7431-4ee4-aa58-f1562c93bc08"
  }
}