diff --git a/.example/net/ghttp/server/template/conflicts-name/client b/.example/net/ghttp/server/template/conflicts-name/client
new file mode 100644
index 000000000..e69de29bb
diff --git a/.example/net/ghttp/server/template/conflicts-name/client.go b/.example/net/ghttp/server/template/conflicts-name/client.go
new file mode 100644
index 000000000..48786e7a8
--- /dev/null
+++ b/.example/net/ghttp/server/template/conflicts-name/client.go
@@ -0,0 +1,16 @@
+package main
+
+import (
+	"github.com/gogf/gf/frame/g"
+	"github.com/gogf/gf/net/ghttp"
+)
+
+// https://github.com/gogf/gf/issues/437
+func main() {
+	s := g.Server()
+	s.BindHandler("/", func(r *ghttp.Request) {
+		r.Response.WriteTpl("client/layout.html")
+	})
+	s.SetPort(8199)
+	s.Run()
+}
diff --git a/.example/net/ghttp/server/template/conflicts-name/template/client/layout.html b/.example/net/ghttp/server/template/conflicts-name/template/client/layout.html
new file mode 100644
index 000000000..56a6051ca
--- /dev/null
+++ b/.example/net/ghttp/server/template/conflicts-name/template/client/layout.html
@@ -0,0 +1 @@
+1
\ No newline at end of file
diff --git a/errors/gerror/gerror_error.go b/errors/gerror/gerror_error.go
index d58b83ab2..6b0927872 100644
--- a/errors/gerror/gerror_error.go
+++ b/errors/gerror/gerror_error.go
@@ -131,8 +131,8 @@ func formatSubStack(st stack, buffer *bytes.Buffer) {
 			if strings.Contains(file, gFILTER_KEY) {
 				continue
 			}
+			// Avoid GF stacks if not in GF development.
 			if !intlog.IsInGFDevelop() {
-				// Avoid GF stacks if not in GF development.
 				if strings.Contains(file, "github.com/gogf/gf/") {
 					continue
 				}
diff --git a/net/ghttp/ghttp_server_log.go b/net/ghttp/ghttp_server_log.go
index 165546db5..4e10c766f 100644
--- a/net/ghttp/ghttp_server_log.go
+++ b/net/ghttp/ghttp_server_log.go
@@ -24,13 +24,15 @@ func (s *Server) handleAccessLog(r *Request) {
 	if r.TLS != nil {
 		scheme = "https"
 	}
-	s.config.Logger.File(s.config.AccessLogPattern).Stdout(s.config.LogStdout).Printf(
-		`%d "%s %s %s %s %s" %.3f, %s, "%s", "%s"`,
-		r.Response.Status,
-		r.Method, scheme, r.Host, r.URL.String(), r.Proto,
-		float64(r.LeaveTime-r.EnterTime)/1000,
-		r.GetClientIp(), r.Referer(), r.UserAgent(),
-	)
+	s.config.Logger.File(s.config.AccessLogPattern).
+		Stdout(s.config.LogStdout).
+		Printf(
+			`%d "%s %s %s %s %s" %.3f, %s, "%s", "%s"`,
+			r.Response.Status,
+			r.Method, scheme, r.Host, r.URL.String(), r.Proto,
+			float64(r.LeaveTime-r.EnterTime)/1000,
+			r.GetClientIp(), r.Referer(), r.UserAgent(),
+		)
 }
 
 // 处理服务错误信息，主要是panic，http请求的status由access log进行管理
@@ -52,12 +54,15 @@ func (s *Server) handleErrorLog(err error, r *Request) {
 	)
 	if stack := gerror.Stack(err); stack != "" {
 		content += "\nStack:\n" + stack
-		s.config.Logger.File(s.config.AccessLogPattern).Stack(false).Stdout(s.config.LogStdout).Error(content)
+		s.config.Logger.File(s.config.AccessLogPattern).
+			Stack(false).
+			Stdout(s.config.LogStdout).
+			Error(content)
 		return
 	}
 	s.config.Logger.File(s.config.AccessLogPattern).
 		Stack(s.config.ErrorStack).
 		StackWithFilter(gPATH_FILTER_KEY).
 		Stdout(s.config.LogStdout).
-		Errorf(content)
+		Error(content)
 }
diff --git a/os/gfile/gfile.go b/os/gfile/gfile.go
index e693dfd1a..be9ce3c78 100644
--- a/os/gfile/gfile.go
+++ b/os/gfile/gfile.go
@@ -101,7 +101,7 @@ func Join(paths ...string) string {
 
 // Exists checks whether given <path> exist.
 func Exists(path string) bool {
-	if _, err := os.Stat(path); !os.IsNotExist(err) {
+	if stat, err := os.Stat(path); stat != nil && !os.IsNotExist(err) {
 		return true
 	}
 	return false
@@ -228,11 +228,7 @@ func CopyDir(src string, dst string) (err error) {
 	if !si.IsDir() {
 		return fmt.Errorf("source is not a directory")
 	}
-	_, err = os.Stat(dst)
-	if err != nil && !os.IsNotExist(err) {
-		return
-	}
-	if err == nil {
+	if Exists(dst) {
 		return fmt.Errorf("destination already exists")
 	}
 	err = os.MkdirAll(dst, si.Mode())
diff --git a/os/gfsnotify/gfsnotify_filefunc.go b/os/gfsnotify/gfsnotify_filefunc.go
index 37f0da364..7518ca19f 100644
--- a/os/gfsnotify/gfsnotify_filefunc.go
+++ b/os/gfsnotify/gfsnotify_filefunc.go
@@ -40,7 +40,7 @@ func fileRealPath(path string) string {
 
 // fileExists checks whether given <path> exist.
 func fileExists(path string) bool {
-	if _, err := os.Stat(path); !os.IsNotExist(err) {
+	if stat, err := os.Stat(path); stat != nil && !os.IsNotExist(err) {
 		return true
 	}
 	return false
diff --git a/os/gspath/gspath.go b/os/gspath/gspath.go
index 8c7a501ad..89d2d06d5 100644
--- a/os/gspath/gspath.go
+++ b/os/gspath/gspath.go
@@ -165,7 +165,7 @@ func (sp *SPath) Search(name string, indexFiles ...string) (filePath string, isD
 			path := ""
 			for _, v := range array {
 				path = gfile.Join(v, name)
-				if stat, err := os.Stat(path); !os.IsNotExist(err) {
+				if stat, err := os.Stat(path); stat != nil && !os.IsNotExist(err) {
 					path = gfile.Abs(path)
 					// Security check: the result file path must be under the searching directory.
 					if len(path) >= len(v) && path[:len(v)] == v {