Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZnE60we/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1db5ea3b-eea1-458e-961b-0a3d6021788a",
      "cw-2468ab36-5c0a-4e00-92cc-39966e4cf8bf"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a42225ae-b329-4c75-8a10-8629ec3da04f",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZnE60we/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2468ab36-5c0a-4e00-92cc-39966e4cf8bf"
  }
}