Mirador viewer

SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/52306",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-01ba39cb-a0a0-4909-986d-96057a21b73d",
      "cw-254208f4-05b0-44ed-b0d6-b7c421c616a9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b4c40ef5-3ca9-42c6-8f95-0ec5b6837691",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/52306",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-254208f4-05b0-44ed-b0d6-b7c421c616a9"
  }
}