Mirador viewer

SyntaxError: Unexpected token '<', "<!DOCTYPE "... is not valid JSON

{
  "manifest": {
    "error": "SyntaxError: Unexpected token '<', \"<!DOCTYPE \"... is not valid JSON",
    "id": "https://cdm16022.contentdm.oclc.org/iiif/info/p16022coll205/314/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d5ee37f2-06af-4305-8127-69e3f6631eb3",
      "cw-86f83033-5a82-437f-9b66-82339176dce3"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cfb74ff3-b3b8-4463-9f92-87501eee6fa3",
    "manifestId": "https://cdm16022.contentdm.oclc.org/iiif/info/p16022coll205/314/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-86f83033-5a82-437f-9b66-82339176dce3"
  }
}