Mirador viewer

SyntaxError: Unexpected end of JSON input
{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://manifests.collections.yale.edu/ycba/obj/56774",
    "isFetching": false
  },
  "window": {
    "canvasId": null,
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-19382785-4979-4ebc-bb4c-3b66ddc629f0",
      "cw-848fd9b6-f89f-445d-95b1-f188b32f1296"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-68ade6bc-3dcb-457d-a3e7-efc6ab5dac74",
    "manifestId": "https://manifests.collections.yale.edu/ycba/obj/56774",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-848fd9b6-f89f-445d-95b1-f188b32f1296"
  }
}
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