TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://cdm17323.contentdm.oclc.org/iiif/2/p17323coll7:5706/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-aa5ea119-bbbc-4b51-8f97-2f8881e5e9db",
      "cw-7a0fb99f-e993-4dde-b2fd-49f3dea3711c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-855962ef-6a53-4564-a0ec-a6bc966bcb12",
    "manifestId": "https://cdm17323.contentdm.oclc.org/iiif/2/p17323coll7:5706/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-7a0fb99f-e993-4dde-b2fd-49f3dea3711c",
    "thumbnailNavigationPosition": "none",
    "allowClose": false,
    "loadedManifest": "https://cdm17323.contentdm.oclc.org/iiif/2/p17323coll7:5706/manifest.json",
    "allowFullscreen": true,
    "allowMaximize": false
  }
}