redirect_uri_mismatch and open with default uri with random port

Question

I am working on a Spring-MVC application running on tomcat in which I would like to use Google Business Profile API functionality. I tried with an OAuth 2.0 Client ID on my local machine and I'm getting a redirect_uri_mismatch.

I don't understand one thing, I am setting the redirect URL in google console and in secret JSON, why on earth is it getting the redirect_url with random port numbers. If I change the port number in the browser URL, it works fine. I have set the port number

return new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver.Builder().setPort(8083).build()).authorize("user");

But get an error Address already binded. I have 2 to 3 days but no luck till yet.

// Creates an InputStream to hold the client ID and secret.
                InputStream secrets =GoogleBusinessMsgsRestService.class.getClassLoader().getResourceAsStream("client_secret.json");


                // Uses the InputStream to create an instance of GoogleClientSecrets.
                GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY,
                    new InputStreamReader(secrets));
                

                // Sets up the authorization code flow.
                GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
                    httpTransport, JSON_FACTORY, clientSecrets,
                    Collections.singleton("https://www.googleapis.com/auth/business.manage"))
                    .setDataStoreFactory(dataStoreFactory).build();
                
                // Returns the credential.
                return new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver.Builder().build()).authorize("user");