Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/4389",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b50369b7-88b6-4ed8-8dad-8ad664a05edc",
      "cw-a0aaec05-20b9-4dc7-9848-6e524b5f7da4"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-31e316f9-5ad0-4dcf-a423-5ec16b3db984",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/4389",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a0aaec05-20b9-4dc7-9848-6e524b5f7da4"
  }
}