Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.sma.unibo.it/smaunibo/containers/BDYaArD/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-70771ed2-d972-481a-9533-9252b49c3bc5",
      "cw-a19c692f-62c4-47a5-939b-18fb67125aa4"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-340adbd4-8325-4492-8c33-62ae1ee5503a",
    "manifestId": "https://dam.sma.unibo.it/smaunibo/containers/BDYaArD/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a19c692f-62c4-47a5-939b-18fb67125aa4"
  }
}