Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam-antenati.cultura.gov.it/antenati/containers/02mjY7j/manifest",
    "isFetching": false
  },
  "viewer": null,
  "window": {
    "canvasId": "https://antenati.cultura.gov.it/ark:/12657/an_ua548038/Leqm1nl",
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1b8ad735-3627-4a5c-866e-f83fae4e3d19",
      "cw-e687bfd6-017e-46c8-9c0d-d14e411f1652"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-873cc475-7de1-483e-b3ab-87855b57bc43",
    "manifestId": "https://dam-antenati.cultura.gov.it/antenati/containers/02mjY7j/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e687bfd6-017e-46c8-9c0d-d14e411f1652",
    "imageToolsEnabled": true,
    "imageToolsOpen": true,
    "visibleCanvases": []
  }
}