Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/rvGLW1A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-eafdc957-a96d-49a2-89dc-f8bf30809000",
      "cw-57809e75-99d8-40df-9d34-d90b2b0ae209"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-152ea026-21f7-47d1-a090-b83461570594",
    "manifestId": "https://dam.iuav.it/iuav/containers/rvGLW1A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-57809e75-99d8-40df-9d34-d90b2b0ae209"
  }
}