Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/zegL8zZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-99fd2c07-188d-4bb3-93e0-8faea8e0548c",
      "cw-f0863cc0-d80d-4cde-88d9-71fc554bc940"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c5c146fc-e418-4f95-9cb8-66e3a34b72fc",
    "manifestId": "https://dam.iuav.it/iuav/containers/zegL8zZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f0863cc0-d80d-4cde-88d9-71fc554bc940"
  }
}