Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/27121",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-cb9dee6a-f176-4c47-8908-bf4a3c8771da",
      "cw-048e6a51-8fe7-46db-b720-1c4789bfb969"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-dcac36ab-10bd-43e2-8a1c-487e8e3d0716",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/27121",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-048e6a51-8fe7-46db-b720-1c4789bfb969"
  }
}