Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Jvaz2DA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9e8480b6-4999-43be-bb60-c6414d017829",
      "cw-2154745e-fe8e-4c70-bc1b-ca38b30d6246"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1931b671-2d24-43e0-a57e-671b0f1e13d8",
    "manifestId": "https://dam.iuav.it/iuav/containers/Jvaz2DA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2154745e-fe8e-4c70-bc1b-ca38b30d6246"
  }
}