Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vxKd63Z/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-304a8ecf-cae5-4164-8c5a-5c14d0f2bd0a",
      "cw-ff0cd6fb-c757-41f6-a7c5-d20bcd983724"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4adeed73-1edf-412d-8654-37df8cab672f",
    "manifestId": "https://dam.iuav.it/iuav/containers/vxKd63Z/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-ff0cd6fb-c757-41f6-a7c5-d20bcd983724"
  }
}