Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/EZnEWye/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2df019c4-2f06-43c5-a42d-81475628aece",
      "cw-2ade274e-5812-4fb3-ba17-4f3b436f63ed"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-016fcd36-b00c-4e9a-be93-bdc230b00ab3",
    "manifestId": "https://dam.iuav.it/iuav/containers/EZnEWye/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2ade274e-5812-4fb3-ba17-4f3b436f63ed"
  }
}