Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e50a9rA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-be79bfc1-db39-4c55-b496-a4314cf4908b",
      "cw-00b483f7-7fe7-4f32-8aa2-f018d3473e91"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f06a2ee9-e8e0-4b70-93c6-4571150bde42",
    "manifestId": "https://dam.iuav.it/iuav/containers/e50a9rA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-00b483f7-7fe7-4f32-8aa2-f018d3473e91"
  }
}