Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/v49BOJA/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-90365499-9b73-4b36-b8ea-c9991f573594",
      "cw-1437b822-0cf9-4fac-a3c4-11b8d7c5e064"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-54ba5504-baa2-4442-a540-e4b57f2513a0",
    "manifestId": "https://dam.iuav.it/iuav/containers/v49BOJA/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-1437b822-0cf9-4fac-a3c4-11b8d7c5e064"
  }
}