Error: Failed creating singular model with no data: settings

Hello, I’m getting the following error when running the latest master branch code, as compiled locally.

Traceback is as follows

  Uncaught Error: Failed creating singular model with no data: settings
    at atoms.ts:43:29
    at selectValue (utils.mjs:106:18)
    at Object.read (utils.mjs:114:16)
    at atomRead (internals.mjs:126:347)
    at internals.mjs:309:30
    at Object.get (internals.mjs:508:36)
    at react.mjs:109:18
    at mountReducer (react-dom.development.js:15729:20)
    at Object.useReducer (react-dom.development.js:16863:16)
    at useReducer (react.development.js:1626:21)

What could be causing this issue, I’ve made some local changes to add a theme, but no other changes were made.