Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/A30V4ae/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6b3ba599-6b80-45c9-a082-c34786afb7a7",
      "cw-51d7cda2-252e-4440-b54c-1fbf215453e0"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f44ecff0-2b3c-4689-99b6-2fd07213dfda",
    "manifestId": "https://dam.iuav.it/iuav/containers/A30V4ae/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-51d7cda2-252e-4440-b54c-1fbf215453e0"
  }
}