diff --git a/server/channelserver/handlers_cast_binary_test.go b/server/channelserver/handlers_cast_binary_test.go
index 4e9b07974..5dd408b2b 100644
--- a/server/channelserver/handlers_cast_binary_test.go
+++ b/server/channelserver/handlers_cast_binary_test.go
@@ -693,7 +693,7 @@ func BenchmarkSlicesContains(b *testing.B) {
 
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
-		slices.Contains(courses, target)
+		_ = slices.Contains(courses, target)
 	}
 }
 
@@ -708,6 +708,6 @@ func BenchmarkSlicesIndexFunc(b *testing.B) {
 
 	b.ResetTimer()
 	for i := 0; i < b.N; i++ {
-		slices.IndexFunc(courses, predicate)
+		_ = slices.IndexFunc(courses, predicate)
 	}
 }
diff --git a/server/channelserver/handlers_discord.go b/server/channelserver/handlers_discord.go
index 3144b5e7b..7f60ba8fe 100644
--- a/server/channelserver/handlers_discord.go
+++ b/server/channelserver/handlers_discord.go
@@ -4,69 +4,10 @@ import (
 	"fmt"
 	"github.com/bwmarrin/discordgo"
 	"golang.org/x/crypto/bcrypt"
-	"sort"
 	"strings"
 	"unicode"
 )
 
-type Player struct {
-	CharName string
-	QuestID  int
-}
-
-func getPlayerSlice(s *Server) []Player {
-	var p []Player
-	var questIndex int
-
-	for _, channel := range s.Channels {
-		for _, stage := range channel.stages {
-			if len(stage.clients) == 0 {
-				continue
-			}
-			questID := 0
-			if stage.isQuest() {
-				questIndex++
-				questID = questIndex
-			}
-			for client := range stage.clients {
-				p = append(p, Player{
-					CharName: client.Name,
-					QuestID:  questID,
-				})
-			}
-		}
-	}
-	return p
-}
-
-func getCharacterList(s *Server) string {
-	questEmojis := []string{
-		":person_in_lotus_position:",
-		":white_circle:",
-		":red_circle:",
-		":blue_circle:",
-		":brown_circle:",
-		":green_circle:",
-		":purple_circle:",
-		":yellow_circle:",
-		":orange_circle:",
-		":black_circle:",
-	}
-
-	playerSlice := getPlayerSlice(s)
-
-	sort.SliceStable(playerSlice, func(i, j int) bool {
-		return playerSlice[i].QuestID < playerSlice[j].QuestID
-	})
-
-	message := fmt.Sprintf("===== Online: %d =====\n", len(playerSlice))
-	for _, player := range playerSlice {
-		message += fmt.Sprintf("%s %s", questEmojis[player.QuestID], player.CharName)
-	}
-
-	return message
-}
-
 // onInteraction handles slash commands
 func (s *Server) onInteraction(ds *discordgo.Session, i *discordgo.InteractionCreate) {
 	switch i.Interaction.ApplicationCommandData().Name {
diff --git a/server/channelserver/handlers_guild.go b/server/channelserver/handlers_guild.go
index 53d7ff9ab..fb6038ae9 100644
--- a/server/channelserver/handlers_guild.go
+++ b/server/channelserver/handlers_guild.go
@@ -642,6 +642,10 @@ func handleMsgMhfOperateGuild(s *Session, p mhfpacket.MHFPacket) {
 	pkt := p.(*mhfpacket.MsgMhfOperateGuild)
 
 	guild, err := GetGuildInfoByID(s, pkt.GuildID)
+	if err != nil {
+		doAckSimpleFail(s, pkt.AckHandle, make([]byte, 4))
+		return
+	}
 	characterGuildInfo, err := GetCharacterGuildData(s, s.charID)
 	if err != nil {
 		doAckSimpleFail(s, pkt.AckHandle, make([]byte, 4))
@@ -1535,9 +1539,9 @@ func handleMsgMhfEnumerateGuildMember(s *Session, p mhfpacket.MHFPacket) {
 func handleMsgMhfGetGuildManageRight(s *Session, p mhfpacket.MHFPacket) {
 	pkt := p.(*mhfpacket.MsgMhfGetGuildManageRight)
 
-	guild, err := GetGuildInfoByCharacterId(s, s.charID)
+	guild, _ := GetGuildInfoByCharacterId(s, s.charID)
 	if guild == nil || s.prevGuildID != 0 {
-		guild, err = GetGuildInfoByID(s, s.prevGuildID)
+		guild, err := GetGuildInfoByID(s, s.prevGuildID)
 		s.prevGuildID = 0
 		if guild == nil || err != nil {
 			doAckBufSucceed(s, pkt.AckHandle, make([]byte, 4))
diff --git a/server/channelserver/handlers_guild_scout.go b/server/channelserver/handlers_guild_scout.go
index a599ec301..004faaf74 100644
--- a/server/channelserver/handlers_guild_scout.go
+++ b/server/channelserver/handlers_guild_scout.go
@@ -190,13 +190,13 @@ func handleMsgMhfAnswerGuildScout(s *Session, p mhfpacket.MHFPacket) {
 func handleMsgMhfGetGuildScoutList(s *Session, p mhfpacket.MHFPacket) {
 	pkt := p.(*mhfpacket.MsgMhfGetGuildScoutList)
 
-	guildInfo, err := GetGuildInfoByCharacterId(s, s.charID)
+	guildInfo, _ := GetGuildInfoByCharacterId(s, s.charID)
 
 	if guildInfo == nil && s.prevGuildID == 0 {
 		doAckSimpleSucceed(s, pkt.AckHandle, make([]byte, 4))
 		return
 	} else {
-		guildInfo, err = GetGuildInfoByID(s, s.prevGuildID)
+		guildInfo, err := GetGuildInfoByID(s, s.prevGuildID)
 		if guildInfo == nil || err != nil {
 			doAckSimpleSucceed(s, pkt.AckHandle, make([]byte, 4))
 			return
diff --git a/server/channelserver/handlers_house.go b/server/channelserver/handlers_house.go
index 8facf11af..d1e9660ba 100644
--- a/server/channelserver/handlers_house.go
+++ b/server/channelserver/handlers_house.go
@@ -442,13 +442,6 @@ func addWarehouseItem(s *Session, item mhfitem.MHFItemStack) {
 	s.server.db.Exec("UPDATE warehouse SET item10=$1 WHERE character_id=$2", mhfitem.SerializeWarehouseItems(giftBox), s.charID)
 }
 
-func addWarehouseEquipment(s *Session, equipment mhfitem.MHFEquipment) {
-	giftBox := warehouseGetEquipment(s, 10)
-	equipment.WarehouseID = token.RNG.Uint32()
-	giftBox = append(giftBox, equipment)
-	s.server.db.Exec("UPDATE warehouse SET equip10=$1 WHERE character_id=$2", mhfitem.SerializeWarehouseEquipment(giftBox), s.charID)
-}
-
 func warehouseGetItems(s *Session, index uint8) []mhfitem.MHFItemStack {
 	initializeWarehouse(s)
 	var data []byte
diff --git a/server/channelserver/handlers_shop_gacha.go b/server/channelserver/handlers_shop_gacha.go
index 096e0948e..9c2bf580d 100644
--- a/server/channelserver/handlers_shop_gacha.go
+++ b/server/channelserver/handlers_shop_gacha.go
@@ -469,10 +469,10 @@ func handleMsgMhfPlayNormalGacha(s *Session, p mhfpacket.MHFPacket) {
 		entries = append(entries, entry)
 	}
 
-	rewardEntries, err := getRandomEntries(entries, rolls, false)
+	rewardEntries, _ := getRandomEntries(entries, rolls, false)
 	temp := byteframe.NewByteFrame()
 	for i := range rewardEntries {
-		rows, err = s.server.db.Queryx(`SELECT item_type, item_id, quantity FROM gacha_items WHERE entry_id = $1`, rewardEntries[i].ID)
+		rows, err := s.server.db.Queryx(`SELECT item_type, item_id, quantity FROM gacha_items WHERE entry_id = $1`, rewardEntries[i].ID)
 		if err != nil {
 			continue
 		}
@@ -525,10 +525,10 @@ func handleMsgMhfPlayStepupGacha(s *Session, p mhfpacket.MHFPacket) {
 	}
 
 	guaranteedItems := getGuaranteedItems(s, pkt.GachaID, pkt.RollType)
-	rewardEntries, err := getRandomEntries(entries, rolls, false)
+	rewardEntries, _ := getRandomEntries(entries, rolls, false)
 	temp := byteframe.NewByteFrame()
 	for i := range rewardEntries {
-		rows, err = s.server.db.Queryx(`SELECT item_type, item_id, quantity FROM gacha_items WHERE entry_id = $1`, rewardEntries[i].ID)
+		rows, err := s.server.db.Queryx(`SELECT item_type, item_id, quantity FROM gacha_items WHERE entry_id = $1`, rewardEntries[i].ID)
 		if err != nil {
 			continue
 		}
@@ -621,7 +621,7 @@ func handleMsgMhfPlayBoxGacha(s *Session, p mhfpacket.MHFPacket) {
 			entries = append(entries, entry)
 		}
 	}
-	rewardEntries, err := getRandomEntries(entries, rolls, true)
+	rewardEntries, _ := getRandomEntries(entries, rolls, true)
 	for i := range rewardEntries {
 		items, err := s.server.db.Queryx(`SELECT item_type, item_id, quantity FROM gacha_items WHERE entry_id = $1`, rewardEntries[i].ID)
 		if err != nil {
diff --git a/server/channelserver/sys_stage.go b/server/channelserver/sys_stage.go
index b0f94a09a..4db9c5810 100644
--- a/server/channelserver/sys_stage.go
+++ b/server/channelserver/sys_stage.go
@@ -84,15 +84,3 @@ func (s *Stage) BroadcastMHF(pkt mhfpacket.MHFPacket, ignoredSession *Session) {
 		session.QueueSendNonBlocking(bf.Data())
 	}
 }
-
-func (s *Stage) isCharInQuestByID(charID uint32) bool {
-	if _, exists := s.reservedClientSlots[charID]; exists {
-		return exists
-	}
-
-	return false
-}
-
-func (s *Stage) isQuest() bool {
-	return len(s.reservedClientSlots) > 0
-}
diff --git a/server/signserver/dbutils.go b/server/signserver/dbutils.go
index 1469af362..d1dcd7537 100644
--- a/server/signserver/dbutils.go
+++ b/server/signserver/dbutils.go
@@ -120,7 +120,7 @@ func (s *Server) getFriendsForCharacters(chars []character) []members {
 	friends := make([]members, 0)
 	for _, char := range chars {
 		friendsCSV := ""
-		err := s.db.QueryRow("SELECT friends FROM characters WHERE id=$1", char.ID).Scan(&friendsCSV)
+		_ = s.db.QueryRow("SELECT friends FROM characters WHERE id=$1", char.ID).Scan(&friendsCSV)
 		friendsSlice := strings.Split(friendsCSV, ",")
 		friendQuery := "SELECT id, name FROM characters WHERE id="
 		for i := 0; i < len(friendsSlice); i++ {
@@ -130,7 +130,7 @@ func (s *Server) getFriendsForCharacters(chars []character) []members {
 			}
 		}
 		charFriends := make([]members, 0)
-		err = s.db.Select(&charFriends, friendQuery)
+		err := s.db.Select(&charFriends, friendQuery)
 		if err != nil {
 			continue
 		}
@@ -173,6 +173,9 @@ func (s *Server) deleteCharacter(cid int, token string, tokenID uint32) error {
 	}
 	var isNew bool
 	err := s.db.QueryRow("SELECT is_new_character FROM characters WHERE id = $1", cid).Scan(&isNew)
+	if err != nil {
+		return err
+	}
 	if isNew {
 		_, err = s.db.Exec("DELETE FROM characters WHERE id = $1", cid)
 	} else {
@@ -184,19 +187,6 @@ func (s *Server) deleteCharacter(cid int, token string, tokenID uint32) error {
 	return nil
 }
 
-// Unused
-func (s *Server) checkToken(uid uint32) (bool, error) {
-	var exists int
-	err := s.db.QueryRow("SELECT count(*) FROM sign_sessions WHERE user_id = $1", uid).Scan(&exists)
-	if err != nil {
-		return false, err
-	}
-	if exists > 0 {
-		return true, nil
-	}
-	return false, nil
-}
-
 func (s *Server) registerUidToken(uid uint32) (uint32, string, error) {
 	_token := token.Generate(16)
 	var tid uint32
diff --git a/server/signserver/sign_server.go b/server/signserver/sign_server.go
index f93a6459a..c97b9da9a 100644
--- a/server/signserver/sign_server.go
+++ b/server/signserver/sign_server.go
@@ -24,7 +24,6 @@ type Server struct {
 	sync.Mutex
 	logger         *zap.Logger
 	erupeConfig    *_config.Config
-	sessions       map[int]*Session
 	db             *sqlx.DB
 	listener       net.Listener
 	isShuttingDown bool