Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/EZnGVQv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f7796512-ce14-4dcf-8cdb-5335ba296a7c",
      "cw-facf4064-09ec-4ef4-a566-afd61423dc28"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6db8a0cf-c2dd-4ecc-ab40-a69409c5f7b0",
    "manifestId": "https://dam.iuav.it/iuav/containers/EZnGVQv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-facf4064-09ec-4ef4-a566-afd61423dc28"
  }
}