Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/ZYzWXyv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-e216e157-0115-42ab-ac28-439dc41b180b",
      "cw-92801038-5401-45c6-ab2c-1ed0fe88f81e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d0454427-853e-4825-b285-804b80d12c1a",
    "manifestId": "https://dam.iuav.it/iuav/containers/ZYzWXyv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-92801038-5401-45c6-ab2c-1ed0fe88f81e"
  }
}