Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/XeW3GGe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-10753df1-c381-44ea-9948-60ad6ef75631",
      "cw-4ca4c36d-3351-4b66-84e6-7162a4003517"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-a457254e-630c-4d11-aaa1-9b6590888c24",
    "manifestId": "https://dam.iuav.it/iuav/containers/XeW3GGe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-4ca4c36d-3351-4b66-84e6-7162a4003517"
  }
}