Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/7AzkO8e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-64ab6009-b75a-47fa-aea5-c90216ae2668",
      "cw-0291328a-db3d-4044-8532-c97cd539479a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-aed75353-c82f-4be9-a667-67e8ed2de115",
    "manifestId": "https://dam.iuav.it/iuav/containers/7AzkO8e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-0291328a-db3d-4044-8532-c97cd539479a"
  }
}