Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v78D8yA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-aa77c11f-993c-4dcb-8555-f31472560abc",
      "cw-1efa08b5-4531-43c9-ae73-ac1b2e09ac05"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-be660ca1-553d-47a7-8732-e790a7bb1785",
    "manifestId": "https://dam.iuav.it/iuav/containers/v78D8yA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1efa08b5-4531-43c9-ae73-ac1b2e09ac05"
  }
}