Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/9AVyW7v/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-030213ec-f4c9-461d-87fe-5acecf078487",
      "cw-b308726b-4449-4293-a43c-dbd596944056"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-febae184-fb13-4494-bbb1-4a9830d928bf",
    "manifestId": "https://dam.iuav.it/iuav/containers/9AVyW7v/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b308726b-4449-4293-a43c-dbd596944056"
  }
}