typeorm | Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server | Object-Relational Mapping library

I have a @OneToMany relation between
Chatroom < 1 ---- M > Messages
And the problem that I have is, whenever I try to insert a Message (or bulk of Messages), The foreign key for ChatRoom is null.
In addition, I'm uploading my setup.

@Entity("messages")
export class Message {

    @PrimaryColumn()
    id: string;

    @ManyToOne(() => ChatRoom, chatroom => chatroom.messages)
    chatRoom: ChatRoom | undefined

    @Column({nullable: false})
    message: string;

    @Column({nullable: false})
    receiver: string;

    @Column({nullable: false})
    created_utc: Date;
}

@Entity("chatrooms")
export class ChatRoom {

    @PrimaryColumn()
    id: string;

    @OneToMany(() => Message, message => message.chatRoom, {
        cascade: ["insert", "remove"]
    })
    @JoinColumn({name: 'id'})
    messages: Message[];

    @Column()
    last_msg: string;

    @Column()
    last_msg_created_utc: Date;

    @Column()
    num_messages: number;

    @Column()
    num_replies: number;

    @Column()
    seen: boolean;

}

Problem:

When trying to create a bulk insert on many messages, I can notice that the query is not setting the foreign key any value, but NULL.

The Message json that I'm trying to insert:

{
 id: '1',
 message: 'text',
 receiver: 'someone',
 created_utc: 'utc date...',
 chatRoomId: '123' -> chat room id exists 
}

the query looks like this :
(this query is for single insert not bulk, but it goes the same for bulk)
INSERT INTO "messages"("id", "message", "receiver", "created_utc", "chatRoomId") VALUES ($1, $2, $3, $4, DEFAULT) -- PARAMETERS: [" bJU7","Zdravo test","kompir_zomba","2021-
09-05T09:53:54.693Z"]

This tells me that chatRoomId is not even taken into consideration when inserting the rows. The table looks as following

The Typeorm insert query that I use to insert Messages

@InjectRepository(Message) private messageRepository: Repository<Message>
.....

    this.messageRepository.save(message);

Anyone has any idea how to proceed with this ?