Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/74123",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-b27b1cbb-bc3c-453c-9c3c-efbde68bc286",
      "cw-c2c71698-f6ce-4537-8b99-7239d56da3e2"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4958d7bd-e4a5-4183-b83b-9a4f9d373689",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/74123",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-c2c71698-f6ce-4537-8b99-7239d56da3e2"
  }
}