Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/kv4bVWe/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1fc40741-5c66-4bdf-b5c3-1dc3deba760e",
      "cw-47e6b126-c3e3-43bd-9f99-f2cd493df995"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2cad9b1f-4f9f-4cc5-b80c-8f394ba7bdd0",
    "manifestId": "https://dam.iuav.it/iuav/containers/kv4bVWe/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-47e6b126-c3e3-43bd-9f99-f2cd493df995"
  }
}