403 error issue

@RestController
@RequestMapping("/api/auth")
public class SignUpAndLoginController {

    @Autowired
    private UserService userService;
    @Autowired
    private AuthenticationManager authenticationManager;

    @PostMapping("/signup")
    public ResponseEntity<User> signUp(@RequestBody User user) {
        User user2 = userService.addUser(user);
        return ResponseEntity.status(HttpStatus.CREATED).body(user2);
    }

@RestController
public class Controller {

    @GetMapping("/hi")
    public String getResponse() {
        return "The response is shit";
    }
}

@Configuration
@EnableWebSecurity
public class SecurityConfiguration {

    @Bean
    SecurityFilterChain filterChain(HttpSecurity httpSecurity) throws Exception {
        httpSecurity.csrf(csrf -> csrf.disable())
                .authorizeHttpRequests(auth -> auth
                        .requestMatchers("/api/**").permitAll()
                        .anyRequest().authenticated());
        return httpSecurity.build();
    }

    @Bean
    PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }