Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/52031",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-2e858daf-e4a8-446b-9ed5-b407b57ce4fe",
      "cw-723ed8dd-ed65-4768-bb79-557db5259bb6"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b44df46d-9a98-4e0b-aedb-e2aee92554b7",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/52031",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-723ed8dd-ed65-4768-bb79-557db5259bb6"
  }
}