Error while transferring data to the database, what to do?

Question

go

In general, I'm trying to transfer data to write them to the database, as I get an error, Gogland IDE says that something is wrong with - go handlePacket(connectFD) it is called immediately after socket.Accept() in a new thread. Tell me what might not be so . oh yes the program crashes in the db.QueryRow(sqlStatement,email,password).Scan(&id) method

func handlePacket(conn net.Conn) {
  rw := bufio.NewReadWriter (bufio.NewReader (conn), bufio.NewWriter (conn))
  defer conn.Close()

  packet := model.RegistrationMessage{}
  client := JsonDecoderMessage(rw).Decode(&packet)
  if client != nil {
    puts("Error from Decode.Please NO :(")
  }

  if 	packet.MessageType 		== model.AUTH_MESSAGE {
    puts("Auth")
  }else if packet.MessageType == model.REGS_MESSAGE {
    puts("Regs")
    Registration(packet.Login,packet.Password)
    puts("good")
  }
}

and here I establish a connection to the database and try to send data to the database

var db *sql.DB
func InitDataBase(){
  psqlInfo := fmt.Sprintf("host=%s port=%d user=%s "+
    "password=%s dbname=%s sslmode=disable",
    host, port, user, password, dbname)
  db, err := sql.Open("postgres", psqlInfo)
  if err != nil {
    panic(err)
  }
  defer db.Close()

  err = db.Ping()
  if err != nil {
    panic(err)
  }
  fmt.Println("Successfully connected!")
}
func Registration( email, password string)  {
  sqlStatement := `INSERT INTO account0( email,password)
          VALUES ($1, $2)
          RETURNING id`
  id:=0
  err := db.QueryRow(sqlStatement,email,password).Scan(&id)
  if err != nil {
    panic(err)
  }
}

Answer 1

I found the answer)) the error turned out to be in the assignment, instead it should have been
db, err = sql.Open("postgres", psqlInfo)

Answer 2

When the InitDataBase() function ends, you close the connection to the database, so you cannot get anything from it later.
defer db.Close() executes right after fmt.Println("Successfully connected!")