Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/mrspl/iiif/93f91b98-5283-4053-883e-fac91d7cc52a/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-66a88d1a-47c3-429c-ab54-3457fe2f62a7",
      "cw-8b10a800-ef22-45df-8792-dcd1a18d30c6"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-999927de-39cb-41d8-b08e-4200a21c6542",
    "manifestId": "https://iiif.quartexcollections.com/mrspl/iiif/93f91b98-5283-4053-883e-fac91d7cc52a/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-8b10a800-ef22-45df-8792-dcd1a18d30c6",
    "thumbnailNavigationPosition": "far-bottom"
  }
}