Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/9AVnx7A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ce11eb6c-81c9-462b-92eb-fc55d2f8e6d8",
      "cw-bdc6ae08-b0c3-4948-ba8b-fffec89d0162"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-22e261a9-130e-42ab-bae9-e74418608a76",
    "manifestId": "https://dam.iuav.it/iuav/containers/9AVnx7A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-bdc6ae08-b0c3-4948-ba8b-fffec89d0162"
  }
}