Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Pe1On1v/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ce3d8e2f-900a-4aae-9029-d33964ca0b01",
      "cw-2b860a32-52a2-451a-88f2-790560087929"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-fb57228d-3f17-4f63-b1e5-1c14b10c3478",
    "manifestId": "https://dam.iuav.it/iuav/containers/Pe1On1v/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-2b860a32-52a2-451a-88f2-790560087929"
  }
}