Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/orb/12256844",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-959d6149-952b-4c8b-b459-4c4ba4b067ad",
      "cw-3d265d72-6d02-4742-bdf4-f6bb40dce0e3"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-704a2281-a194-4055-8b53-6c951e96c9eb",
    "manifestId": "https://manifests.collections.yale.edu/ycba/orb/12256844",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3d265d72-6d02-4742-bdf4-f6bb40dce0e3"
  }
}