Using promise for supported languages causes runtime error

[chrcit]

Version: 2.0.1
Error Error: Element type is invalid. Received a promise that resolves to: undefined. Lazy element type must resolve to a class or function.

Screenshot:

Code:

supportedLanguages: (client) =>
  client.fetch(
    `(*[_type == 'siteSettings'][0] {
      "languages": coalesce(languages[], [{
        'id': 'en',
        'title': 'English'
        
      }])
    }).languages`
  ),