Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vxBwKEe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f69af2b1-c21a-4adf-86d7-70625d61c7ce",
      "cw-6e44a769-3b3c-4f41-b410-9fade4ca0eeb"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-77864797-ae4d-4b0e-9ed6-c7f03c265bf4",
    "manifestId": "https://dam.iuav.it/iuav/containers/vxBwKEe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6e44a769-3b3c-4f41-b410-9fade4ca0eeb"
  }
}