Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e50Pa3A/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-fa1222e3-69eb-40cc-9ef1-a16bfd8478e2",
      "cw-45eb96bd-6eb5-4be2-b7c4-9d43cc1ac44f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0a16ac13-4f78-4ff2-96f5-59cf0df15497",
    "manifestId": "https://dam.iuav.it/iuav/containers/e50Pa3A/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-45eb96bd-6eb5-4be2-b7c4-9d43cc1ac44f"
  }
}