diff --git a/node/node.go b/node/node.go
index e347d4c..ebb1e36 100644
--- a/node/node.go
+++ b/node/node.go
@@ -295,9 +295,9 @@ func GetService(serviceName string) service.IService {
 	return service.GetService(serviceName)
 }
 
-func SetConfigDir(configDir string) {
-	configDir = configDir
-	cluster.SetConfigDir(configDir)
+func SetConfigDir(cfgDir string) {
+	configDir = cfgDir
+	cluster.SetConfigDir(cfgDir)
 }
 
 func GetConfigDir() string {
diff --git a/sysservice/rankservice/RankSkip.go b/sysservice/rankservice/RankSkip.go
index a0c7609..e2a7dc1 100644
--- a/sysservice/rankservice/RankSkip.go
+++ b/sysservice/rankservice/RankSkip.go
@@ -356,12 +356,12 @@ func (rs *RankSkip) GetRankNodeDataByRank(rank uint64) (*RankData, uint64) {
 // GetRankKeyPrevToLimit 获取key前count名的数据
 func (rs *RankSkip) GetRankKeyPrevToLimit(findKey, count uint64, result *rpc.RankDataList) error {
 	if rs.GetRankLen() <= 0 {
-		return fmt.Errorf("rank[", rs.rankId, "] no data")
+		return fmt.Errorf("rank[%d] no data", rs.rankId)
 	}
 
 	findData, ok := rs.mapRankData[findKey]
 	if ok == false {
-		return fmt.Errorf("rank[", rs.rankId, "] no data")
+		return fmt.Errorf("rank[%d] no data", rs.rankId)
 	}
 
 	_, rankPos := rs.skipList.GetWithPosition(findData)
@@ -385,12 +385,12 @@ func (rs *RankSkip) GetRankKeyPrevToLimit(findKey, count uint64, result *rpc.Ran
 // GetRankKeyPrevToLimit 获取key前count名的数据
 func (rs *RankSkip) GetRankKeyNextToLimit(findKey, count uint64, result *rpc.RankDataList) error {
 	if rs.GetRankLen() <= 0 {
-		return fmt.Errorf("rank[", rs.rankId, "] no data")
+		return fmt.Errorf("rank[%d] no data", rs.rankId)
 	}
 
 	findData, ok := rs.mapRankData[findKey]
 	if ok == false {
-		return fmt.Errorf("rank[", rs.rankId, "] no data")
+		return fmt.Errorf("rank[%d] no data", rs.rankId)
 	}
 
 	_, rankPos := rs.skipList.GetWithPosition(findData)