Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AMjkpDe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-f6969db8-51a6-4858-83ab-60e02e2ea40c",
      "cw-83c36b71-0709-4ac8-8408-30ad318c6752"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-122fa218-7dc3-4cf1-8c35-38927f045734",
    "manifestId": "https://dam.iuav.it/iuav/containers/AMjkpDe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-83c36b71-0709-4ac8-8408-30ad318c6752"
  }
}