Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/mrspl/iiif/c587c155-bb9f-40b5-9f7a-630853a5c723/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-0142fd55-13ad-4d7f-ac92-871ef8f6f115",
      "cw-d35e10e9-5e00-4ee5-a74f-74e298901d7c"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-dbf4e276-17c1-40ae-b51d-fa602930cc3f",
    "manifestId": "https://iiif.quartexcollections.com/mrspl/iiif/c587c155-bb9f-40b5-9f7a-630853a5c723/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-d35e10e9-5e00-4ee5-a74f-74e298901d7c",
    "thumbnailNavigationPosition": "far-bottom"
  }
}