Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/hcpl/iiif/9f4014bf-114b-4d45-8da1-a98f8da61bdb/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9cc390db-491c-4b2d-83de-089c18d79e52",
      "cw-e4c775ba-2e07-455d-beb7-c27e74e7c362"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-d2dffd04-d3b4-4cca-9d8c-4706c35ae3d1",
    "manifestId": "https://iiif.quartexcollections.com/hcpl/iiif/9f4014bf-114b-4d45-8da1-a98f8da61bdb/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-e4c775ba-2e07-455d-beb7-c27e74e7c362",
    "thumbnailNavigationPosition": "far-bottom"
  }
}