Constructor base dependency injection not working?

It's my first time encountering this error that says

`Description:

Parameter 0 of constructor in com.team.zah.blog.service.Impl.PostServiceImpl required a bean of type 'com.team.zah.blog.repository.PostRepository' that could not be found.

Action:

Consider defining a bean of type 'com.team.zah.blog.repository.PostRepository' in your configuration.`

I can't fathom the problem here as I've clearly used the lombok annotation: @AllArgsConstructor in my class

Class code here:

package com.team.zah.blog.service.Impl;

import com.team.zah.blog.dto.PostDTO;
import com.team.zah.blog.model.Post;
import com.team.zah.blog.repository.PostRepository;
import com.team.zah.blog.service.PostService;
import lombok.AllArgsConstructor;
import org.modelmapper.ModelMapper;
import org.springframework.stereotype.Service;

@Service
@AllArgsConstructor
public class PostServiceImpl implements PostService {

    private PostRepository postRepository;
    private ModelMapper modelMapper;

    @Override
    public PostDTO create(PostDTO postDTO) {
        Post post = modelMapper.map(postDTO, Post.class);
        Post savedPost = postRepository.save(post);
        return modelMapper.map(savedPost, PostDTO.class);
    }
}

I tried to manually do it like this

    @Autowired
    public void setPostRepository(PostRepository postRepository) {
        this.postRepository = postRepository;
    }
    
    @Autowired
    public void setModelMapper(ModelMapper modelMapper) {
        this.modelMapper = modelMapper;
    }

but I still get the problem of missing bean.

I wonder what the problem here is?

It works with @RequiredArgsConstructor and final fields.

1. Repository

package com.team.zah.blog.repository;
import org.springframework.data.jpa.repository.JpaRepository;
import com.team.zah.blog.model.Post;

public interface PosRepository extends JpaRepository<Post, Long> {

}

2. Service

package com.team.zah.blog.service.Impl;

import com.team.zah.blog.dto.PostDTO;
import com.team.zah.blog.model.Post;
import com.team.zah.blog.repository.PostRepository;
import com.team.zah.blog.service.PostService;
import lombok.RequiredArgsConstructor;
import org.modelmapper.ModelMapper;
import org.springframework.stereotype.Service;

@Service
@RequiredArgsConstructor
public class PostServiceImpl implements PostService {

    private final PostRepository postRepository;
    private final ModelMapper modelMapper;

    @Override
    public PostDTO create(PostDTO postDTO) {
        Post post = modelMapper.map(postDTO, Post.class);
        Post savedPost = postRepository.save(post);
        return modelMapper.map(savedPost, PostDTO.class);
    }
}