Invalid Response Code for Unauthorized user

Question

I want my spring application to allow only admin to access /user/* and /section/*.
The application is currently blocking the request made by other users but as far as my understanding is concerned, I should get a 403 error, Instead I am getting a 401 Unauthorized as response.

The following image is the screenshot.

Here is the code which should only allow admins

http.csrf().disable().
                addFilterAfter(new JWTTokenGeneratorFilter(), BasicAuthenticationFilter.class)
                .addFilterBefore(new JWTTokenValidatorFilter(), BasicAuthenticationFilter.class)
                .authorizeHttpRequests((requests) -> requests
                        .requestMatchers("/section/*","/user/*").hasRole("ADMIN")
                        .requestMatchers("/auth/*").authenticated())
                .formLogin(Customizer.withDefaults())
                .httpBasic(Customizer.withDefaults());
        return http.build();

Please help me understand, if this behaviour is correct. I seem to be getting 401 error for all exceptions being thrown in my application.