Spring-Security OAUTH2 and PKCE, IdentityServer4 How do I add code_challenge info - spring-boot

Question

I am trying to access Identity Server. When I try to access I get an error that says
MessageTemplate: code_challenge is missing
I have a basic Spring Boot Application. How do I get the app to add in the Code Challenge and code Challenge type.
I have tried to add in this:
#Configuration
public class OAuth2ClientConfiguration {
#Bean
public SecurityWebFilterChain pkceFilterChain(ServerHttpSecurity http, ServerOAuth2AuthorizationRequestResolver resolver) {
http.authorizeExchange(r -> r.anyExchange().authenticated());
http.oauth2Login(auth -> auth.authorizationRequestResolver(resolver));
return http.build();
}
#Bean
public ServerOAuth2AuthorizationRequestResolver pkceResolver(ReactiveClientRegistrationRepository repo) {
DefaultServerOAuth2AuthorizationRequestResolver resolver = new DefaultServerOAuth2AuthorizationRequestResolver(repo);
resolver.setAuthorizationRequestCustomizer(OAuth2AuthorizationRequestCustomizers.withPkce());
return resolver;
}
but that causes an error saying that
Description:
Parameter 0 of method pkceFilterChain in com.landstar.security.poc.securitypoc.config.OAuth2ClientConfiguration required a bean of type 'org.springframework.security.config.web.server.ServerHttpSecurity' that could not be found.
Action:
Consider defining a bean of type 'org.springframework.security.config.web.server.ServerHttpSecurity' in your configuration.
Additional Info
#Configuration
#EnableWebSecurity
public class SecurityConfig {
private static final String[] WHITE_LIST_URLS = {
"/user",
"/helloPublic",
"/register",
"/verifyRegistration*",
"/resendVerifyToken*"
};
#Bean
SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
http
.cors()
.and()
.csrf()
.disable()
.authorizeHttpRequests()
.antMatchers(WHITE_LIST_URLS).permitAll()
.antMatchers("/api/**").authenticated()
.and()
.oauth2Login(oauth2login ->
oauth2login.loginPage("/auth2/authorization/landstar"))
.logout(l -> l
.logoutSuccessUrl("/").permitAll()
)
.oauth2Client(Customizer.withDefaults());
return http.build();
}
}
Please, any help.!!! thanks