Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/imb/iiif/b7f39496-f1d3-472b-8087-efe99de48cc8/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-1dbf1a61-31bc-432a-af3e-3befb25fde41",
      "cw-b88f7b08-bb98-48a6-8ae1-be279708f67b"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-b91f0225-3e8a-4c78-a596-dcf51fc7a6be",
    "manifestId": "https://iiif.quartexcollections.com/imb/iiif/b7f39496-f1d3-472b-8087-efe99de48cc8/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b88f7b08-bb98-48a6-8ae1-be279708f67b",
    "thumbnailNavigationPosition": "far-bottom"
  }
}