Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/5AEjwde/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c248209b-fd70-4473-94de-7697122dddd4",
      "cw-d5047b7d-b2bc-440d-8d09-31fd5f63d461"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-17e756fe-1c75-45ca-b91d-0cd96f1e9e38",
    "manifestId": "https://dam.iuav.it/iuav/containers/5AEjwde/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d5047b7d-b2bc-440d-8d09-31fd5f63d461"
  }
}