Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/hcpl/iiif/ad4e06a4-ff28-44a9-ada0-5e2734d80b33/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-9a5a30b5-84f3-4e87-a7b1-95c8f6dc48c7",
      "cw-bda3872b-4e75-4360-8536-c0d937f97e12"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-cd90af21-42f0-43d5-838d-49718072c6a3",
    "manifestId": "https://iiif.quartexcollections.com/hcpl/iiif/ad4e06a4-ff28-44a9-ada0-5e2734d80b33/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-bda3872b-4e75-4360-8536-c0d937f97e12",
    "thumbnailNavigationPosition": "far-bottom"
  }
}