Field tokenService in br.com.alura.forum.controller.AutenticacaoController required a bean

Ao compilar me é retornado o seguinte erro:

APPLICATION FAILED TO START

Description:

Field tokenService in br.com.alura.forum.controller.AutenticacaoController required a bean of type 'br.com.alura.forum.config.security.TokenService' that could not be found.

The injection point has the following annotations:

- @org.springframework.beans.factory.annotation.Autowired(required=true)

Action:

Consider defining a bean of type 'br.com.alura.forum.config.security.TokenService' in your configuration.

Process finished with exit code 0

Porém na classe controller está tudo ok:

package br.com.alura.forum.controller;

import br.com.alura.forum.config.security.TokenService; import br.com.alura.forum.controller.form.LoginForm; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.http.ResponseEntity; import org.springframework.security.authentication.AuthenticationManager; import org.springframework.security.authentication.UsernamePasswordAuthenticationToken; import org.springframework.security.core.Authentication; import org.springframework.security.core.AuthenticationException; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController;

import javax.validation.Valid;

@RestController @RequestMapping("/auth") public class AutenticacaoController {

@Autowired
private AuthenticationManager authManager;

@Autowired
private TokenService tokenService;

@PostMapping
public ResponseEntity<?> auntenticar(@RequestBody @Valid LoginForm form){
    UsernamePasswordAuthenticationToken dadosLogin = form.converte();
    try {
        Authentication authentication =  authManager.authenticate(dadosLogin);
        String token = tokenService.gerarToken(authentication);
        System.out.println(token);
        return ResponseEntity.ok().build();

    }catch (AuthenticationException e){
        return ResponseEntity.badRequest().build();
    }
}

}

Classe TokenService:

package br.com.alura.forum.config.security;

import br.com.alura.forum.modelo.Usuario; import io.jsonwebtoken.Jwts; import io.jsonwebtoken.SignatureAlgorithm; import org.springframework.beans.factory.annotation.Value; import org.springframework.security.core.Authentication;

import java.util.Date;

public class TokenService {

@Value("${forum.jwt.expiration")
private  String expiration;
@Value("${forum.jwt.secret")
private  String secret;

public String gerarToken(Authentication authentication){
    Usuario logado = (Usuario) authentication.getPrincipal(); //Isso recupera o usário logado
    Date hoje = new Date();
    Date dataExpiracao = new Date(hoje.getTime() + Long.parseLong(expiration));
    return Jwts.builder()
            .setIssuer("API do Fórum da Alura") //Nome da aplicação que está gerando o token
            .setSubject(logado.getId().toString()) //Nome do usuário logado
            .setIssuedAt(hoje)
            .setExpiration(dataExpiracao)
            .signWith(SignatureAlgorithm.HS256, secret)
            .compact();
}

}