Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/JvawYQe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-29ed758d-f185-4220-ae09-0d15a6713030",
      "cw-7b82ae3a-9ff8-4073-b6c7-b7c9840bb064"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-aa17c65b-8530-4518-afbd-ee67b10fb8f9",
    "manifestId": "https://dam.iuav.it/iuav/containers/JvawYQe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7b82ae3a-9ff8-4073-b6c7-b7c9840bb064"
  }
}