TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "http://cdm17413.contentdm.oclc.org/iiif/2/imagecoll:5273/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-feb84c5c-2f67-4819-b63a-080fd2b3ca52",
      "cw-13ceefac-05e1-4f80-be6c-d3813b71e2dd"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-af355f81-6384-4b08-8a88-ac8448cf814d",
    "manifestId": "http://cdm17413.contentdm.oclc.org/iiif/2/imagecoll:5273/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-13ceefac-05e1-4f80-be6c-d3813b71e2dd",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "http://cdm17413.contentdm.oclc.org/iiif/2/imagecoll:5273/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}