Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://cdm16022.contentdm.oclc.org/iiif/info/mgs/1143/manifest.json",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-ae81d2a1-ffda-4dcc-9f4b-e0d96192a726",
      "cw-552e0a1c-b3a3-41ab-b747-a8f61d0955e0"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cc27d0b7-52df-43b2-b5ba-68761e79e01d",
    "manifestId": "https://cdm16022.contentdm.oclc.org/iiif/info/mgs/1143/manifest.json",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-552e0a1c-b3a3-41ab-b747-a8f61d0955e0"
  }
}