Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/hcpl/iiif/15e034d2-0fea-4c9a-a4b9-7b9abb03aad7/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-c7b1a07e-aeeb-4fce-920a-ed8a88fc3e1d",
      "cw-b34bcffc-d554-4a4a-a180-f2259cc19555"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e3ddf8db-a9ae-43c8-900d-370602322131",
    "manifestId": "https://iiif.quartexcollections.com/hcpl/iiif/15e034d2-0fea-4c9a-a4b9-7b9abb03aad7/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-b34bcffc-d554-4a4a-a180-f2259cc19555",
    "thumbnailNavigationPosition": "far-bottom"
  }
}