Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/2AK0K2e/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-26a327c9-428a-4cf1-a512-108abe292878",
      "cw-f7966f48-36bf-41fb-b07a-c2436c1f534d"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ccfb28ea-54d1-4af5-8e66-843ab1e40b38",
    "manifestId": "https://dam.iuav.it/iuav/containers/2AK0K2e/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f7966f48-36bf-41fb-b07a-c2436c1f534d"
  }
}