TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "http://cdm17413.contentdm.oclc.org/iiif/2/imagecoll:2758/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-14d654a1-773f-48de-9e11-7937a954763f",
      "cw-3428a586-224e-43c6-a236-0b975dbea048"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-30cff752-2935-40f4-962b-b6c555f2591b",
    "manifestId": "http://cdm17413.contentdm.oclc.org/iiif/2/imagecoll:2758/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-3428a586-224e-43c6-a236-0b975dbea048",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "http://cdm17413.contentdm.oclc.org/iiif/2/imagecoll:2758/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}