Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/vxBk1Ee/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-edeb0eee-0833-4a72-937e-64b5c3c4e8ab",
      "cw-73a83829-4267-469b-b029-0fd25fb1216b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-7db865d8-fe8f-474d-87db-04a5984944a0",
    "manifestId": "https://dam.iuav.it/iuav/containers/vxBk1Ee/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-73a83829-4267-469b-b029-0fd25fb1216b"
  }
}