error when inserting into relational table many to many

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

the entity

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

the service

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

the 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)

my payload

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