Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v78OG1A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2fff6363-f19f-49ec-b3e5-ee71eb8bc6f8",
      "cw-8dc55c6f-fedc-4b30-b598-004e672956ca"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-77e0835e-ae87-48eb-9802-2c166fbcc6e8",
    "manifestId": "https://dam.iuav.it/iuav/containers/v78OG1A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8dc55c6f-fedc-4b30-b598-004e672956ca"
  }
}