Spring boot + OAuth2, Throw server_error - spring-boot

Question

I'm getting internal server error while running my code. i have no idea what happened because It shows nothing in console.
here my AuthorizationServerConfig class
#Configuration
#EnableAuthorizationServer
public class AuthorizationServerConfig extends AuthorizationServerConfigurerAdapter {
#Autowired
private PasswordEncoder passwordEncoder;
#Autowired
private DataSource dataSource;
#Autowired
private AuthenticationManager authenticationManager;
#Bean
TokenStore jdbcTokenStore() {
return new JdbcTokenStore(dataSource);
}
#Override
public void configure(AuthorizationServerSecurityConfigurer security) throws Exception {
security.checkTokenAccess("isAuthenticated()").tokenKeyAccess("permitAll()");
}
#Override
public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
clients.jdbc(dataSource).passwordEncoder(passwordEncoder);
}
#Override
public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
endpoints.tokenStore(jdbcTokenStore());
endpoints.authenticationManager(authenticationManager);
}
}
here my websecurityconfig code
#EnableWebSecurity
#Configuration
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {
#Autowired
private UserDetailsService userDetailsService;
#Bean
protected AuthenticationManager getAuthenticationManager() throws Exception {
return super.authenticationManagerBean();
}
#Bean
public static PasswordEncoder passwordEncoder() {
return NoOpPasswordEncoder.getInstance();
}
#Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder());
}
}
this is my userserviceImpl
#Service("userDetailsService")
public class UserDetailsServiceImpl implements UserDetailsService {
#Autowired
private UserDetailRepository userDetailRepository;
#Override
public UserDetails loadUserByUsername(String name) throws UsernameNotFoundException {
Optional<User> optionalUser = userDetailRepository.findByUsername(name);
optionalUser.orElseThrow(() -> new UsernameNotFoundException("Username or password wrong"));
UserDetails userDetails = new AuthUserDetail(optionalUser.get());
new AccountStatusUserDetailsChecker().check(userDetails);
return userDetails;
}
}
this is how i get token
http://localhost:8802/oauth/token?grant_type=password&username=abc&scope=READ&password=abc *
output
{
"error": "server_error",
"error_description": "Internal Server Error"
}