SyntaxError: Unexpected end of JSON input

{
  "manifest": {
    "error": "SyntaxError: Unexpected end of JSON input",
    "id": "https://iiif.persee.fr/b0e2cf11-597c-427d-8ac7-68bcc0acf13b/b406191f-53a6-48d6-88ff-682155a31afc/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-8012ff59-e735-48ce-884e-3f1e6efe5fff",
      "cw-fe4ad453-b2ce-4d20-937d-1c8616b3a4b3"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": true,
    "id": "window-1",
    "manifestId": "https://iiif.persee.fr/b0e2cf11-597c-427d-8ac7-68bcc0acf13b/b406191f-53a6-48d6-88ff-682155a31afc/manifest",
    "maximized": true,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "annotations",
    "thumbnailNavigationId": "cw-fe4ad453-b2ce-4d20-937d-1c8616b3a4b3",
    "thumbnailNavigationPosition": "off",
    "canvasIndex": 69
  }
}