Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Jvazb5A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-50ab561d-72b7-4e7e-a32c-a9eb1b9eaee9",
      "cw-b8940ec1-3536-491b-8e14-8acfafbf6836"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6657d547-6e50-45ec-9bdc-c14b468f2d8d",
    "manifestId": "https://dam.iuav.it/iuav/containers/Jvazb5A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b8940ec1-3536-491b-8e14-8acfafbf6836"
  }
}