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/p16022coll205/632/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-6919fd14-f4e7-4949-a504-3b9a406b721e",
      "cw-e48cf4fe-3a3b-43ad-87c6-acd461e650c5"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-ce46a486-58ba-4e9f-9a04-9538fa41f0a0",
    "manifestId": "https://cdm16022.contentdm.oclc.org/iiif/info/p16022coll205/632/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e48cf4fe-3a3b-43ad-87c6-acd461e650c5"
  }
}