Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/20579",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-80a7508e-ffcd-4e74-b190-6f756d722719",
      "cw-b5cefa86-38ff-4a23-b1a4-da0a2df5ecb6"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f37bdb1e-ffc4-44c9-9802-a54ff8384bb6",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/20579",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b5cefa86-38ff-4a23-b1a4-da0a2df5ecb6"
  }
}