How to use the @tsed/common.$log.error function in @tsed/common

try {
        const options = req.ctx.endpoint.get(OAuthBearerOptions) || {}; // retrieve options configured for the endpoint
        // check precondition and authenticate user by their token and given options
        try {
          const user = authService.verify(token, options);

          if (!user) {
            authService.add(token);
            $log.info({event: "BearerStrategy - token: ", token});
            return done(null, token);
          }

          $log.info({event: "BearerStrategy - user: ", token});
          return done(null, user, token);
        } catch (error) {
          $log.error({event: "BearerStrategy", token, error});
          return done(error);
        }
      } catch (error) {
        return done(error);
      }
    };

async function bootstrap(): Promise {
  try {
    $log.debug("Start server...");
    const server = await ServerLoader.bootstrap(Server);

    await server.listen();
    $log.debug("Server initialized");
    Logger(); // hello, world
  } catch (er) {
    $log.error(er);
  }
}

async function bootstrap() {
  try {
    $log.debug("Start server...");
    const server = await ServerLoader.bootstrap(Server);

    await server.listen();
    $log.debug("Server initialized");
  } catch (er) {
    $log.error(er);
  }
}

async function bootstrap() {
  try {
    $log.debug("Start server...");
    const server = await ServerLoader.bootstrap(Server);

    await server.listen();
    $log.debug("Server initialized");
  } catch (er) {
    $log.error(er);
  }
}

async function bootstrap() {
  try {
    $log.debug("Start server...");
    const server = await ServerLoader.bootstrap(Server);

    await server.listen();
    $log.debug("Server initialized");
  } catch (er) {
    $log.error(er);
  }
}

async function bootstrap() {
  try {
    $log.debug("Start server...");
    const server = await ServerLoader.bootstrap(Server);

    await server.listen();
    $log.debug("Server initialized");
  } catch (er) {
    $log.error(er);
  }
}

async function bootstrap() {
  try {
    $log.debug("Start server...");
    const server = await ServerLoader.bootstrap(Server);

    await server.listen();
    $log.debug("Server initialized");
  } catch (er) {
    $log.error(er);
  }
}

async function bootstrap() {
  try {
    $log.debug("Start server...");
    const server = await ServerLoader.bootstrap(Server);

    await server.listen();
    $log.debug("Server initialized");
  } catch (er) {
    $log.error(er);
  }
}

async function bootstrap() {
  try {
    $log.debug("Start server...");
    const server = await ServerLoader.bootstrap(Server);

    await server.listen();
    $log.debug("Server initialized");
    Logger();
  } catch (er) {
    $log.error(er);
  }
}