unrecognized custom.autoswagger description and version

[matiasict]

i'm configuring auto swagger (v3.1.0) in serverless.yml, it is not recognizing “version” and “description”. what could be happening?

serverless.yml:

autoswagger:
    swaggerPath: 'site/swagger'
    apiType: httpApi
    title: Backoffice API
    description: API del Backoffice
    version: '2.0.0'
    excludeStages: ['stage', 'prod']
    typefiles: [
      './packages/swagger/types/types.d.ts'
      ]

Error: