Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e9kdX4v/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5c5ca6a9-befa-4d74-b6dd-36c7f1d6187d",
      "cw-5d05b8cc-3e68-4b1e-8ba3-a0b504d0b47f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c6218aae-cb2b-4361-8357-609ded914f95",
    "manifestId": "https://dam.iuav.it/iuav/containers/e9kdX4v/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5d05b8cc-3e68-4b1e-8ba3-a0b504d0b47f"
  }
}