Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vPWlpnZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7651e405-d6af-43af-ba07-e133a7ae7ea5",
      "cw-c7c07e2c-1747-4d2e-9255-adb219bdcd6a"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-8c522b32-d9b6-46ca-95aa-2c2867a0cf31",
    "manifestId": "https://dam.iuav.it/iuav/containers/vPWlpnZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c7c07e2c-1747-4d2e-9255-adb219bdcd6a"
  }
}