Lombok not generating getter and setter?

First time using lombok, and if I'm understanding it correctly, lomboks getter and setter annotations generates setter and getter methods without having to code it, but for some reason I'm getting an "undefined method" error whenever I try to call a getter/setter method.

What's wrong here?

import lombok.Getter;
import lombok.Setter;

public class Student {
    @Getter @Setter
    private String firstName;
    @Getter @Setter
    private String lastName;
    
    public Student(String firstName, String lastName) {
        super();
        this.setFirstName(firstName); // method undefined error here
        this.setLastName(lastName);   // method undefined error here
    }
}