Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/dAM7apZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a68ed34e-2537-4cfb-85e2-41866be6b63e",
      "cw-adaaa791-40fa-48ce-a89c-ad2475bfa330"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-6b6bff1c-f7a6-44fc-8ba2-e2a35d45950b",
    "manifestId": "https://dam.iuav.it/iuav/containers/dAM7apZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-adaaa791-40fa-48ce-a89c-ad2475bfa330"
  }
}