TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "http://cdm17413.contentdm.oclc.org/iiif/2/imagecoll:14388/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-d9e39fa7-50ec-4b57-b6f0-9634322d9a70",
      "cw-a2b03401-6d13-4c80-a6a6-d1ad259f116e"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-f5689169-6564-4d47-9b16-ba138e527be2",
    "manifestId": "http://cdm17413.contentdm.oclc.org/iiif/2/imagecoll:14388/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-a2b03401-6d13-4c80-a6a6-d1ad259f116e",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "http://cdm17413.contentdm.oclc.org/iiif/2/imagecoll:14388/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}