Bridge table primary as foreign key in another table (JPA) - database

Question

I'm designing a student enrollment database
Student-Table
student_id (pk)
//other attributes
Course-Table
course_id (pk)
//other attributes
Student_course-Table
student_course_id(pk)
course_id (fk)
student_id (fk)
Lectrue-Table
lecture_id(pk)
student_course_id(fk - > student_course table)
// other attributes
Basically I want to store which student is enrolled to which course and has attend how many lectures for that particular course.
Q1 ) Is this design correct? Should I use primary key of Bridge table as foreign key in another table.
Q2 ) I did manyToMany mapping between student <-> course and oneToMany between student_course <-> lecture and got the following error :
org.hibernate.MappingException: Foreign key must have same number of columns as the referenced primary key
Any idea how to proceed?
//UPDATE Entity class
#Entity
#Table(name = "STUDENT")
public class Student implements Serializable {
#Id
#Column(name = "STUDENT_ID")
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
#ManyToMany(mappedBy = "students" ,cascade = CascadeType.ALL)
#MapKey(name = "courseName")
private Map<String, Course> courses;
}
#Entity
#Table(name = "COURSE", uniqueConstraints = #UniqueConstraint(columnNames = {"COURSE_NAME"}))
public class Course implements Serializable {
#Id
#Column(name = "COURSE_ID")
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
#ManyToMany(cascade = CascadeType.ALL)
#JoinTable(name = "STUDENT_COURSE", joinColumns = {
#JoinColumn(name = "COURSE_ID") }, inverseJoinColumns = {
#JoinColumn(name = "STUDENT_ID") })
private Set<Student> students;
#Column(name = "COURSE_NAME")
private String courseName;
}
#Entity
#Table(name = "LECTURE")
public class Lecture {
#Id
#Column(name = "LECTURE_ID")
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
#ManyToOne(cascade = CascadeType.ALL)
#JoinColumn(name = "STUDENT_COURSE_ID")
private StudentCourse studentCourse;
}
#Entity
#Table(name = "STUDENT_COURSE")
public class StudentCourse {
#Id
#Column(name = "STUDENT_COURSE_ID")
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
#Column(name = "STUDENT_ID")
private Long studentId;
#Column(name = "COURSE_ID")
private Long courseId;
#OneToMany(mappedBy = "studentCourse")
private Set<Lecture> lectures = new HashSet<Lecture>();
}