Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/AVy7nPv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8827cb8f-7869-4253-b37d-ada72834509e",
      "cw-6698b1b9-6496-4d45-b3c4-6ecab2f73a1c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-1fae15c4-2dd4-4ffb-8c36-61e2e2fac010",
    "manifestId": "https://dam.iuav.it/iuav/containers/AVy7nPv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-6698b1b9-6496-4d45-b3c4-6ecab2f73a1c"
  }
}