Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e9kLGkv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-a578d1d7-2168-47e9-8be5-1c70d02c4074",
      "cw-e124894e-37ed-4bf3-b164-d36ba3ad9587"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9266e658-6262-4b2e-b665-78cdac80470d",
    "manifestId": "https://dam.iuav.it/iuav/containers/e9kLGkv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e124894e-37ed-4bf3-b164-d36ba3ad9587"
  }
}