Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/xZjE0le/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7c9733f7-883d-440f-8f23-08affc1aca7c",
      "cw-4fa836e3-3f3e-4649-9cb0-31944ad46f31"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-7777a25d-c709-4bde-908f-22bd52f87b49",
    "manifestId": "https://dam.iuav.it/iuav/containers/xZjE0le/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4fa836e3-3f3e-4649-9cb0-31944ad46f31"
  }
}