Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.sma.unibo.it/smaunibo/containers/rD6lPna/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1f866bd0-ef95-4a80-b6bc-270e6b92bdf0",
      "cw-f5943c60-97da-41a9-9ce8-56e68c1e9ac1"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f4101dc6-8bad-4e95-ac04-0536ffb54bee",
    "manifestId": "https://dam.sma.unibo.it/smaunibo/containers/rD6lPna/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-f5943c60-97da-41a9-9ce8-56e68c1e9ac1"
  }
}