Spring security returning 401 with requestmatchers permitAll

@Bean
    SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
        http.csrf(csrf -> csrf.disable())
                .authorizeHttpRequests(
                auth -> auth.requestMatchers(HttpMethod.POST, "/api/v1/register").permitAll()
                        .anyRequest().authenticated())
                .httpBasic(Customizer.withDefaults())
                .oauth2ResourceServer(
                        conf -> conf.jwt(Customizer.withDefaults()));
        return http.build();
    }