Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://cdm16022.contentdm.oclc.org/iiif/info/mgs/762/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5032776d-e682-4b5b-b13d-eabe63f00696",
      "cw-558f7059-cb3b-47fa-b281-7670dd06a440"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e77c75e2-7c10-4224-895d-64cacf96ff84",
    "manifestId": "https://cdm16022.contentdm.oclc.org/iiif/info/mgs/762/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-558f7059-cb3b-47fa-b281-7670dd06a440"
  }
}