Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/eWn3jjA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6e54fffe-afd1-49b5-838d-f45725f69139",
      "cw-c903648f-7029-45ac-9315-f7f0ab5e3881"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-158d3f91-ba8e-4bae-9935-74e6c49933b6",
    "manifestId": "https://dam.iuav.it/iuav/containers/eWn3jjA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c903648f-7029-45ac-9315-f7f0ab5e3881"
  }
}