Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/wArNorA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9103b0d6-46c0-40c8-be98-c6b47b2e5ab4",
      "cw-a459eb23-9453-446d-af50-a493f0c00bbd"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d56519c6-9452-4534-9807-a2d74332292e",
    "manifestId": "https://dam.iuav.it/iuav/containers/wArNorA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a459eb23-9453-446d-af50-a493f0c00bbd"
  }
}