UNSOLVED Issue with use OAuth with react blog - using NextJs ts

rationem

Hi,
I am attempting to follow the OAuth with react blog
My stack uses NextJs and NestJs (built on express).
In the server login route, I am getting a typescript error.
The code with the error is:

@Get('/login')
  public async login(@Req()request: Request, @Res() response: Response){
    const state = crypto.randomBytes(64)
    request.session.oauthState = state;
  }

The typescript error is

Property 'oauthState' does not exist on type 'Session & Partial<SessionData>'.ts(2339)

I have the latest types definition file
@types/express-session": "^1.17.5",

Could you assist?

Many thanks