I'm trying to persist relational data in myql database with typeORM and nestjs but it's showing an error apparently in the database

Entity:

  @ManyToMany(()=> Stock, stock => stock.seals)
  @JoinTable()
  stock: Stock[];

Service:

var c = getConnection().getRepository(Seals).save(createSealDto)
     return c 

Error:

ERROR [ExceptionsHandler] Cannot add or update a child row: a foreign key constraint fails (stocksystem.stock_seals_seals, CONSTRAINT FK_70140d58e95fbceed988b224e64 FOREIGN KEY (stockId) REFERENCES stock (id) ON DELETE CASCADE ON UPDATE CASCADE)

Payload:

{"client":{"id":1},"stock":[{"id":1},{"id":1}],"price":398}