Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/Pe1Ojxv/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-32a9f264-6616-466b-b076-69b97937c12a",
      "cw-994c199d-589a-4052-8726-99771a4e7f61"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2e4f04dd-ddfd-4c4d-8ebd-f55c7cf7b822",
    "manifestId": "https://dam.iuav.it/iuav/containers/Pe1Ojxv/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-994c199d-589a-4052-8726-99771a4e7f61"
  }
}