Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/BeyjVBZ/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-23d984a7-ccb5-49ab-b599-b768032450da",
      "cw-e71e5597-c332-4bc6-8f5a-1ad305636bb3"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4597cabd-1905-45fb-afa7-fe3590430cfc",
    "manifestId": "https://dam.iuav.it/iuav/containers/BeyjVBZ/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e71e5597-c332-4bc6-8f5a-1ad305636bb3"
  }
}