WebSocket connection error on Unity WebGL

I created a Spring WebSocket server.
I want to real-time connection with Unity webgl.

It works well when I connect with postman.

It works well on Unity Game Scene.

 async void Start()
 {
     Debug.Log("Starting WebSocket connection...");

     clientId = System.Guid.NewGuid().ToString();
     ws = new WebSocket("wss://unbiased-evenly-worm.ngrok-free.app/game");

     ws.OnOpen += () =>
     {
         Debug.Log("WebSocket connected!");
     };

     ws.OnMessage += (byte[] msg) =>
     {
         string message = Encoding.UTF8.GetString(msg);
         Debug.Log("Message received: " + message);
         OnMessageReceived(message);
     };

     ws.OnError += (string errMsg) =>
     {
         Debug.LogError("WebSocket error: " + errMsg);
     };

     ws.OnClose += (WebSocketCloseCode code) =>
     {
         Debug.LogWarning("WebSocket closed with code: " + code.ToString());
     };

     Debug.Log("Attempting to connect WebSocket...");
     try
     {
         await ws.Connect();
         Debug.Log("WebSocket connection successful.");
     }
     catch (System.Exception ex)
     {
         Debug.LogError("WebSocket connection failed: " + ex.Message);
     }

     targetPosition = transform.position;

     Cursor.lockState = CursorLockMode.Locked;
     Cursor.visible = false;
 }

I think it's not working in the browser, it's like a cors error

@Configuration
@EnableWebMvc
public class CorsConfig implements WebMvcConfigurer {
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOriginPatterns("*")
                .allowedMethods("GET", "POST", "PUT", "DELETE")
                .allowedHeaders("*")
                .allowCredentials(true)
                .maxAge(3600);
    }
}

@Configuration
@EnableWebSecurity
public class SecurityConfig {
    private final JWTUtil jwtUtil;

    public SecurityConfig(JWTUtil jwtUtil) {
        this.jwtUtil = jwtUtil;
    }

    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Bean
    public WebSecurityCustomizer webSecurityCustomizer() {
        return web -> web.ignoring()
                .requestMatchers("/error", "/favicon.ico");
    }

    @Bean
    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
        http
                .csrf(csrf -> csrf.disable())
                .formLogin(formLogin -> formLogin.disable())
                .httpBasic(httpBasic -> httpBasic.disable())
                .authorizeHttpRequests(auth -> auth
                        .requestMatchers("/login", "/", "/join", "/verify-id", "/register", "/check-email", "/verify-email", "/verify-test", "/oauth/google", "/oauth/kakao", "/oauth","/profile/**","/refresh", "/reset-password","/reset-password-auth","/game/**","upload","/image","/game").permitAll()
                        .anyRequest().authenticated()
                )
                .addFilterBefore(new JWTFilter(jwtUtil), UsernamePasswordAuthenticationFilter.class)
                .sessionManagement(session -> session
                        .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                );
        return http.build();
    }
}

@Configuration
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer {

    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
        registry.addHandler(new GameWebSocketHandler(), "/game")
                .setAllowedOrigins("*"); 
    }
}

Is there anything wrong with the spring or Unity code?

enter image description here

Changing the server address to ws://localhost:8080/game works well on the web(server is running on my local)

Can connection from postman to "wss://unbiased-evenly-worm.ngrok-free.app/game"

It is currently deployed using ngrock