Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/wAr1xYv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9b0aff38-43ad-42ea-83b0-d4eb822912dc",
      "cw-8166f184-ff10-435a-bbc8-bb76fb0f28db"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-68f9735c-ea25-4c3b-97e3-2807c07d2c8b",
    "manifestId": "https://dam.iuav.it/iuav/containers/wAr1xYv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8166f184-ff10-435a-bbc8-bb76fb0f28db"
  }
}