Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/A30Kjpe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2ee7dfdb-1ee1-4e07-bdad-a63fcb361917",
      "cw-5855fa31-03f1-4fa6-95bb-44b11a4629f5"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b9a2c872-dc1e-416f-ab69-37bb721b20e8",
    "manifestId": "https://dam.iuav.it/iuav/containers/A30Kjpe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5855fa31-03f1-4fa6-95bb-44b11a4629f5"
  }
}