Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/orb/4221220",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0b773b3a-fec0-4854-89c9-3021d8d8bb3e",
      "cw-3e6ca887-086c-44d7-a976-94708074a314"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b4c1e835-0c97-4dda-91c9-fbf1e3d738c5",
    "manifestId": "https://manifests.collections.yale.edu/ycba/orb/4221220",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3e6ca887-086c-44d7-a976-94708074a314"
  }
}