Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/JZq6KQv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c923f909-020d-41d8-890e-7f476487f4c0",
      "cw-66797346-d3d7-4866-be63-0c9044063777"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-395f7bd3-0cc7-4a97-b9e0-93e37e342ea8",
    "manifestId": "https://dam.iuav.it/iuav/containers/JZq6KQv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-66797346-d3d7-4866-be63-0c9044063777"
  }
}