Help needed in Linear redirection

  const authPrefix = '/api/v1/auth';
  app.use((req: Request, res: Response, next: NextFunction) => {
    if (!req.url.startsWith(authPrefix)) return next();
    const handler = toNodeHandler(auth);
    return handler(req, res);
  });

export const authClient = createAuthClient({
  baseURL: ${process.env.NEXT_PUBLIC_SERVER_URL ?? 'http://localhost:3000'}/api/v1/auth,

  socialProviders: {
        linear: { 
            clientId: "xxx", 
            clientSecret: "xxx",
            scope: ["read", "write", "issues:create"],
            redirectURI: "http://localhost:3000/api/v1/auth/linear/callback",
        }, 
    },