Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/20567",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-51defed4-2759-436e-9295-753d517094c9",
      "cw-911eab19-1370-4823-b0a1-71d5bfc4e6ca"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-57d59021-e229-42f1-a687-be6cb8b7a59a",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/20567",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-911eab19-1370-4823-b0a1-71d5bfc4e6ca"
  }
}