Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/eWn366A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-47405c24-34ac-43b9-a75e-81073b5f465a",
      "cw-45673b5a-00ac-4fa4-b6ce-af6261862865"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-898ccbbd-7713-41b6-85f1-4cc768218200",
    "manifestId": "https://dam.iuav.it/iuav/containers/eWn366A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-45673b5a-00ac-4fa4-b6ce-af6261862865"
  }
}