can't parse securitylist message

Created by: Kaign

I am stuck with this little program, fix server returns securitylist message with many repeated symbols 146=50. How can I get all 50 ?

import (
            "github.com/quickfixgo/quickfix"            
            fix44sl "github.com/quickfixgo/quickfix/fix44/securitylist"
)

func newApplication() *Application {
          app := &Application{
                  MessageRouter: quickfix.NewMessageRouter(),
          }
          app.AddRoute(fix44sl.Route(app.onSecurityList))

          return app
  }

func (ap *Application) FromApp(message quickfix.Message, sessionID quickfix.SessionID) quickfix.MessageRejectError {
          return ap.Route(message, sessionID)
  }

func (a *Application) onSecurityList(msg fix44sl.SecurityList, sessionID quickfix.SessionID) (err quickfix.MessageRejectError) {
                  noRelSyms, err := msg.GetNoRelatedSym()
                  if err != nil {
                          log.Fatal("ERROR ", err)
                  }

          return nil
  }

2016/06/20 19:21:55 main.go:40: ERROR Repeating group fields out of order (group 146: template is wrong or delimiter 55 not found: expected 50 groups, but found 1)