Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/hcpl/iiif/f8843869-bfaa-47f9-a13d-cbd014bd93d2/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-fafdb253-11dd-461f-bdf5-8016348cdd95",
      "cw-fe92f2ac-6b8c-49c7-8181-53412c21ad9f"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-2a4fd9e8-5c28-4196-836b-b95bfcc696ab",
    "manifestId": "https://iiif.quartexcollections.com/hcpl/iiif/f8843869-bfaa-47f9-a13d-cbd014bd93d2/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-fe92f2ac-6b8c-49c7-8181-53412c21ad9f",
    "thumbnailNavigationPosition": "far-bottom"
  }
}