Spring не отображает страницы

Спринг не отображает страницы.

При попытке входа на страницу выдает ошибку:

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Circular view path [registration]: would dispatch back to the current handler URL [/registration] again. Check your ViewResolver setup! (Hint: This may be the result of an unspecified view, due to default view name generation.)] with root cause

Пробовал freemarker просто на html поменять, чтобы хоть какое-то отображение было. То же самое...

Ссылка на гитхаб проекта: https://github.com/MikTop/WebTest

Основные классы:

MainController

package com.example.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;

@Controller
public class MainController {

    @GetMapping("/")
    public String mainPage() {
        return "index";
    }


    @GetMapping("/login")
    public String login() {
        return "login";
    }

}

RegistrationController

package com.example.controller;

import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;

import com.example.domain.User;
import com.example.repo.UserRepo;

@Controller
public class RegistrationController {

    @Autowired
    private UserRepo userRepo;

    @GetMapping("/registration")
    public String registration() {
        return "registration";
    }


    @PostMapping ("/registration")
    public String addNewUser(User user, Map<String, Object> model) {
        User userFromDB = userRepo.findByUsername(user.getUsername());

        if (userFromDB != null) {
            model.put("message", "User Exist");
            return "registration";
        }
        userRepo.save(user);

        return "login";

    }
}

common.ftl

<#macro page>
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Shop</title>
</head>
<body>
<#nested>
</body>
</html>
</#macro>

index.ftl

<#import "parts/common.ftl" as c>

<@c.page>

<h1>Hello at our shop</h1>


<a href="/registration">Add new user</a>
<a href="/login">Sign in</a>

</@c.page>

SecurityConfig

package com.example.security;

import javax.activation.DataSource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.SecurityBuilder;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.WebSecurityConfigurer;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.crypto.password.StandardPasswordEncoder;

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter{



    @Autowired
    private UserDetailsService userDetailsService;

    @Bean
    public BCryptPasswordEncoder encoder() {
        return new BCryptPasswordEncoder(4);
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService).passwordEncoder(encoder());
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                .authorizeRequests()
                    .antMatchers("/**").permitAll()
                  //  .anyRequest().authenticated()
                .and()
                    .formLogin()
                    .loginPage("/login")
                    .permitAll()
                .and()
                    .logout()
                    .permitAll();
    }

    ```

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