Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Am61Yye/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-778cdce6-7bf7-4b4e-83f1-206095b1a029",
      "cw-094ed005-da5f-48d9-b7c2-f8d334867861"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-0d41fcd5-3056-41aa-b874-7d3d0323d8f9",
    "manifestId": "https://dam.iuav.it/iuav/containers/Am61Yye/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-094ed005-da5f-48d9-b7c2-f8d334867861"
  }
}