Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vxBBb3e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a73a1e22-6414-48b5-aa1e-17d123364c9a",
      "cw-9e7f62a6-5204-4cbb-8ebc-03939f674065"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4a9ea97f-96af-4247-9ac8-f77194260d71",
    "manifestId": "https://dam.iuav.it/iuav/containers/vxBBb3e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-9e7f62a6-5204-4cbb-8ebc-03939f674065"
  }
}