TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "http://cdm17413.contentdm.oclc.org/iiif/2/imagecoll:2136/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-4868db40-da26-4e3b-9486-5b29d8ab43dc",
      "cw-8746bb3a-77cb-4d80-8a19-a8342735ecf9"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-4d2b1672-0d9d-42b9-a786-ec6209968db5",
    "manifestId": "http://cdm17413.contentdm.oclc.org/iiif/2/imagecoll:2136/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8746bb3a-77cb-4d80-8a19-a8342735ecf9",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "http://cdm17413.contentdm.oclc.org/iiif/2/imagecoll:2136/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}