Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://digital.library.unt.edu/ark:/67531/metadc2342566/manifest/",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-7e3cc5ef-151f-4783-9373-d411e3199305",
      "cw-453dc534-daae-4bc0-9aa4-87d935080cc2"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-8af41f91-99d0-4567-9470-b50a6115b317",
    "manifestId": "https://digital.library.unt.edu/ark:/67531/metadc2342566/manifest/",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-453dc534-daae-4bc0-9aa4-87d935080cc2",
    "thumbnailNavigationPosition": "far-bottom"
  }
}