Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://iiif.quartexcollections.com/lmudigitalcollections/iiif/6915b43a-d24d-42ca-9699-947b18f76edb/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-5825583f-a20b-43cd-99d3-c52ee3f49d4f",
      "cw-809d68c4-94e9-4b09-95ad-c5b27c0fb669"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-9934955c-ec6c-4f4c-a57e-c287633b012a",
    "manifestId": "https://iiif.quartexcollections.com/lmudigitalcollections/iiif/6915b43a-d24d-42ca-9699-947b18f76edb/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-809d68c4-94e9-4b09-95ad-c5b27c0fb669",
    "thumbnailNavigationPosition": "far-bottom"
  }
}