@Configuration
    @AllArgsConstructor
    @EnableWebSecurity
    public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
        private final AppUserService appUserService;
        private final BCryptPasswordEncoder bCryptPasswordEncoder;
        //without this line it works
        private String newProp;
        private FacebookConnectionSignup facebookConnectionSignup;
        @Override
        protected void configure(AuthenticationManagerBuilder auth) throws Exception {
            auth.authenticationProvider(daoAuthenticationProvider());
        @Bean
        public DaoAuthenticationProvider daoAuthenticationProvider() {
            DaoAuthenticationProvider provider =
                    new DaoAuthenticationProvider();
            provider.setPasswordEncoder(bCryptPasswordEncoder);
            provider.setUserDetailsService(appUserService);
            return provider;
        @Override
        protected void configure(HttpSecurity http) throws Exception {
                    .csrf().disable()
                    .authorizeRequests()
                    .antMatchers("/api/v*/registration/**")
                    .permitAll()
                    .anyRequest()
                    .authenticated().and()
                    .formLogin();
        @Bean
        public ProviderSignInController providerSignInController() {
            ConnectionFactoryLocator connectionFactoryLocator =
                    connectionFactoryLocator();
            UsersConnectionRepository usersConnectionRepository =
                    getUsersConnectionRepository(connectionFactoryLocator);
            ((InMemoryUsersConnectionRepository) usersConnectionRepository)
                    .setConnectionSignUp(facebookConnectionSignup);
            return new ProviderSignInController(connectionFactoryLocator,
                    usersConnectionRepository, new FacebookSignInAdapter());
        private ConnectionFactoryLocator connectionFactoryLocator() {
            ConnectionFactoryRegistry registry = new ConnectionFactoryRegistry();
            registry.addConnectionFactory(new FacebookConnectionFactory("appId", "appSecret"));
            return registry;