getting error during the creation of relationship between JPA entities

I'm trying to create entities but I got the following error.

Internal Exception: Exception [EclipseLink-7157] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.ValidationException
Exception Description: Entity class [class application.Team] must use a @JoinColumn instead of @Column to map its relationship attribute [mPlayers].

These are my entities, I need to store data into the database using the Java Persistence API (JPA). To do so I create entities as following. Maybe I have created the relationships between entities in the wrong way.

Person

@MappedSuperclass
public class Person {
 @Id
 @GeneratedValue( strategy= GenerationType.AUTO )
 protected int p_id;

 protected String firstName;
 protected String middleName;
 protected String lastName;
 protected String phone; 
 protected String email;

 public Person() {
 }
}

Player

    @Entity
@Table( name = "tbl_players")
@AttributeOverride(name="id", column=@Column(name="player_id"))
public class Player extends Person implements Serializable{
    private int player_id;
    
    @Column(name = "goals_in_year")
    private int numberOfGoalsInCurrentYear;
    
    private boolean goalie;
    
    @Column(name = "defended_goals")
    private int defendedGoals;
    
    public Player(){
        
    }
 }

Manager

@Entity
@Table( name = "tbl_manager")
@AttributeOverride(name="id", column=@Column(name="manager_id"))
public class Manager extends Person implements Serializable{
    private String dob;
    private int starRating;
    
    @OneToOne
    private Team teamToManage;

    public Manager(){
    }
}

Team

@Entity
@Table( name = "tbl_team")
public class Team implements Serializable {
    @Column(name = "team_name")
    @Id
    String teamName;
    
    @OneToOne
    Manager manager;
    
    @Column(name = "team_players")
    @OneToMany
    private List<Player> mPlayers = new ArrayList<>();
    
    @Column(name = "jersey_color")
    String jerseyColor;
    
    public Team(){
    }
}

League

@Entity
public class League {
    @Id
    private int league_id;
    
    @OneToMany
    @Column(name = "League Teams")
    private List<Team> mTeam = new ArrayList<>();
    
    public void addTeam(Team team) {
        mTeam.add(team);
    }

    public void removeTeam(Team team) {
        mTeam.remove(team);
    }
}

Use @JoinColumn for Mapping (@OneToMany, @ManyToMany, @ManyToOne) instead of @Column. @Column is used to specify the mapped column for a persistent property or field.

It seems to be due to @Column(name = "team_players") and @OneToManyPlease

Please read the link
https://stackoverflow.com/a/24206471/11207493

Why dont u treat each model class as an entity then u join the model using either ManyToOne or OneToMany

Player

@Entity
@Table( name = "tbl_players")
@AttributeOverride(name="id", column=@Column(name="player_id"))
public class Player extends Person implements Serializable{
private int player_id;
@Column(name = "goals_in_year")
private int numberOfGoalsInCurrentYear;
private boolean goalie;
@Column(name = "defended_goals")
private int defendedGoals;
@OneToOne // or @OneToMany as you desire
@JoinColumn(name="team_name") // here the name you have given to the column in tbl_players
private Team team;
public Player(){
}
}

Manager

@Entity
@Table( name = "tbl_manager")
@AttributeOverride(name="id", column=@Column(name="manager_id"))
public class Manager extends Person implements Serializable{
private String dob;
private int starRating;
@OneToOne(mappedBy="manager")
private Team teamToManage;
public Manager(){
}
}

Team

@Entity
@Table( name = "tbl_team")
public class Team implements Serializable {
@Id
@Column(name = "team_id")
private int id;    
@Column(name = "team_name")
String teamName;
@OneToOne
@JoinColumn(name="manager_id")
Manager manager;
@Column(name = "team_players")
@OneToMany(mappedBy="team")
private List<Player> mPlayers = new ArrayList<>();
@Column(name = "jersey_color")
String jerseyColor;
@ManyToOne(mappedBy="")
private League league;
public Team(){
}
}

League

@Entity
@Table( name = "tbl_league")
public class League {
@Id
@Column(name="league_id")
private int league_id;
@OneToMany
@JoinTable(name="tbl_league_teams",joinColumns=@JoinColumn(name = "league_id"), inverseJoinColumns=@JoinColumn(name = "team_id"))
private List<Team> mTeam = new ArrayList<>();
public void addTeam(Team team) {
mTeam.add(team);
}
public void removeTeam(Team team) {
mTeam.remove(team);
}
}

Create new intermiditate mapping table named tbl_league_teams with columns league_id and team_id to facilitate the @JoinTable in League entity to map between teams in a league.