diff --git a/cmd/app/handler/slack_handler.go b/cmd/app/handler/slack_handler.go
index 93542cc..3523086 100644
--- a/cmd/app/handler/slack_handler.go
+++ b/cmd/app/handler/slack_handler.go
@@ -13,6 +13,7 @@ import (
 	"github.com/slack-go/slack"
 	"github.com/slack-go/slack/slackevents"
 	"github.com/slack-go/slack/socketmode"
+	"github.com/spf13/viper"
 	"go.uber.org/zap"
 	"gorm.io/gorm"
 )
@@ -56,6 +57,8 @@ func (sh *slackHandler) HoustonConnect() {
 				}
 			case socketmode.EventTypeConnectionError:
 				{
+					sh.logger.Error("appToken : " + viper.GetString("houston.slack.app.token"))
+					sh.logger.Error("botToken : " + viper.GetString("houston.slack.bot.token"))
 					sh.logger.Error("houston connection failed.")
 				}
 			case socketmode.EventTypeConnected: