diff --git a/client/operation.go b/client/operation.go
index 7881eab..2cae0cf 100644
--- a/client/operation.go
+++ b/client/operation.go
@@ -8,6 +8,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"io/fs"
 	"net/http"
 	"os"
 	"os/exec"
@@ -84,9 +85,15 @@ func findLastestVersion(root string) (string, error) {
 	if len(entries) == 0 {
 		return "", nil
 	}
-	latest := parseVersionString(entries[0].Name())
-	for i := 1; i < len(entries); i++ {
-		next := parseVersionString(entries[i].Name())
+	var dironly []fs.DirEntry
+	for _, ent := range entries {
+		if ent.IsDir() {
+			dironly = append(dironly, ent)
+		}
+	}
+	latest := parseVersionString(dironly[0].Name())
+	for i := 1; i < len(dironly); i++ {
+		next := parseVersionString(dironly[i].Name())
 		if compareVersionString(latest, next) < 0 {
 			latest = next
 		}
@@ -153,8 +160,7 @@ func (meta *procmeta) launch(args []string, exitChan chan<- *exec.Cmd) error {
 				break
 			}
 			errfile.Write(buff[:size])
-			new := atomic.AddInt32(&meta.stderrSize, int32(size))
-			logger.Println("stderrSize :", new)
+			atomic.AddInt32(&meta.stderrSize, int32(size))
 		}
 	}()
 
@@ -173,8 +179,7 @@ func (meta *procmeta) launch(args []string, exitChan chan<- *exec.Cmd) error {
 				break
 			}
 			outfile.Write(buff[:size])
-			new := atomic.AddInt32(&meta.stdoutSize, int32(size))
-			logger.Println("stdoutSize :", new)
+			atomic.AddInt32(&meta.stdoutSize, int32(size))
 		}
 	}()
 
@@ -192,6 +197,7 @@ func (meta *procmeta) launch(args []string, exitChan chan<- *exec.Cmd) error {
 }
 
 func (hc *houstonClient) startChildProcess(req *shared.StartProcessRequest) error {
+	logger.Println("startChildProcess :", *req)
 	if req.Version == "latest" {
 		// 최신 버전을 찾음
 		latest, err := findLastestVersion(path.Join("./", req.Name))
@@ -211,6 +217,7 @@ func (hc *houstonClient) startChildProcess(req *shared.StartProcessRequest) erro
 	verpath := path.Join("./", req.Name, req.Version)
 	fi, err := os.Stat(verpath)
 	if err == nil && fi.IsDir() {
+		logger.Println("path found :", verpath)
 		// Define regular expression
 		re := regexp.MustCompile(`[^\s"']+|"([^"]*)"|'([^']*)`)