Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vPWn5XZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ec73dac2-5490-4c91-92e2-3ba0cd6c7c25",
      "cw-86126bfd-40d7-4254-adec-09a892a4e70f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-c8847a08-8321-477f-8f49-03753878e939",
    "manifestId": "https://dam.iuav.it/iuav/containers/vPWn5XZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-86126bfd-40d7-4254-adec-09a892a4e70f"
  }
}