Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/57934",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d199f02e-27b3-49a9-acc4-6ec87716b3c6",
      "cw-5d090dba-d6f2-4f6f-b854-edb2e68b6a66"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-47c17607-55ae-407a-897e-49dc32715e8b",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/57934",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-5d090dba-d6f2-4f6f-b854-edb2e68b6a66"
  }
}