Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/54200",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d98ccd4a-4d8b-49a3-b4e4-2fc5a4b9e6e9",
      "cw-410005b5-c854-4712-9e20-b5db9d434937"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-7096016d-c007-4343-b99d-ead544c59bdf",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/54200",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-410005b5-c854-4712-9e20-b5db9d434937"
  }
}