JPA Query is not throwing any errors and I keep getting only null - spring

Question

I'm fairly new to Spring and JPA.
I have a User entity:
package com.cooksys.twitter.entities;
import java.sql.Timestamp;
import java.util.List;
import javax.persistence.*;
import com.fasterxml.jackson.annotation.JsonIgnore;
import lombok.Getter;
import lombok.Setter;
import org.hibernate.annotations.CreationTimestamp;
import lombok.NoArgsConstructor;
#Table(name = "user_table")
#Entity
#NoArgsConstructor
#Getter
#Setter
public class User {
#Id
#GeneratedValue
private Long id;
#Embedded
private Credentials credentials;
#Embedded
private Profile profile;
#CreationTimestamp
private Timestamp joined;
#JsonIgnore
#OneToMany(mappedBy = "author", cascade = CascadeType.ALL)
private List<Tweet> tweets;
#ManyToMany(mappedBy = "likes")
private List<Tweet> likedTweets;
#ManyToMany(mappedBy = "following")
private List<User> followers;
#ManyToMany
private List<User> following;
#ManyToMany(mappedBy = "userMentioned")
private List<Tweet> mentions;
#Column
private boolean deleted;
}
I have a Credentials entity:
package com.cooksys.twitter.entities;
import javax.persistence.Column;
import javax.persistence.Embeddable;
import lombok.Data;
import lombok.NoArgsConstructor;
#NoArgsConstructor
#Data
#Embeddable
public class Credentials {
#Column(unique=true)
private String username;
private String password;
}
I have my UserRepository:
package com.cooksys.twitter.repositories;
import com.cooksys.twitter.entities.Credentials;
import com.cooksys.twitter.entities.User;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import org.springframework.stereotype.Repository;
#Repository
public interface UserRepository extends JpaRepository<User, Long> {
User findByCredentials(Credentials credentials);
User findByCredentials_Username(String username);
User findByCredentialsUsernameAndPassword(String username, String password);
}
I'm getting passed in a TweetRequestDto that has Credentials inside with a username and password. Now when I pass those credentials into my repository query :
User user = userRepository.findByCredentials_Username(tweetRequestDto.getCredentials().getUsername());
or any variation of the queries in my repository, I only get returned null. I know the credentials are correct and in the database.
Any help is appreciated, thank you.