Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vGE6Kze/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4baa05b5-8bf4-42c4-97cf-dd4023538686",
      "cw-9ca2b1c3-4936-4ed0-b490-41b059dd313a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b8667030-b145-495e-8f55-ad3a7a6b2693",
    "manifestId": "https://dam.iuav.it/iuav/containers/vGE6Kze/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9ca2b1c3-4936-4ed0-b490-41b059dd313a"
  }
}