diff --git a/gradle.properties b/gradle.properties
index 7891509..99db2d5 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,3 +1,3 @@
 netbeans.org-netbeans-modules-javascript2-requirejs.enabled=true
 release_version_major=2.2
-release_version_minor=7.0
+release_version_minor=7.1
diff --git a/release/YaguraExtender-v2.2.jar b/release/YaguraExtender-v2.2.jar
index 5e1055a..cadb41f 100644
Binary files a/release/YaguraExtender-v2.2.jar and b/release/YaguraExtender-v2.2.jar differ
diff --git a/src/main/java/extend/util/external/ThemeUI.java b/src/main/java/extend/util/external/ThemeUI.java
index b519023..9425abc 100644
--- a/src/main/java/extend/util/external/ThemeUI.java
+++ b/src/main/java/extend/util/external/ThemeUI.java
@@ -35,7 +35,7 @@ public static void changeStyleTheme(RSyntaxTextArea textArea) {
                 Gutter gutter = RSyntaxUtilities.getGutter(textArea);
                 if (gutter!=null) {
                     gutter.setBackground(UIManager.getColor("TextField.background"));
-                    gutter.setLineNumberColor(UIManager.getColor("TextField.background"));
+                    gutter.setLineNumberColor(UIManager.getColor("TextField.foreground"));
                 }
             });
         } catch (NullPointerException ex) {
diff --git a/src/main/java/yagura/model/SendToServer.java b/src/main/java/yagura/model/SendToServer.java
index 20f45c7..d317500 100644
--- a/src/main/java/yagura/model/SendToServer.java
+++ b/src/main/java/yagura/model/SendToServer.java
@@ -228,9 +228,10 @@ public void connectFailed(URI uri, SocketAddress sa, IOException ex) {
 
     protected void outPostHeader(OutputStream out, URL tagetURL) throws IOException, Exception {
         HttpService httpService = new HttpService(tagetURL);
-        out.write(StringUtil.getBytesRaw(String.format("POST %s HTTP/1.1", FileUtil.appendLastSeparator(tagetURL.getFile(), "/")) + HttpUtil.LINE_TERMINATE));
+        String target = tagetURL.getFile().isEmpty() ? "/" : tagetURL.getFile();
+        out.write(StringUtil.getBytesRaw(String.format("POST %s HTTP/1.1", target) + HttpUtil.LINE_TERMINATE));
         out.write(StringUtil.getBytesRaw(String.format("Host: %s", HttpUtil.buildHost(httpService.getHost(), httpService.getPort(), httpService.isHttps())) + HttpUtil.LINE_TERMINATE));
-        out.write(StringUtil.getBytesRaw(String.format("User-Agent: %s", "Java-http-client/BurpSuite") + StringUtil.NEW_LINE));
+        out.write(StringUtil.getBytesRaw(String.format("User-Agent: %s", "Java-http-client/BurpSuite") + HttpUtil.LINE_TERMINATE));
     }
 
     protected void outMultipart(String boundary, OutputStream out, IHttpRequestResponse messageInfo) throws IOException, Exception {
diff --git a/src/main/java/yagura/view/JTransCoderTab.java b/src/main/java/yagura/view/JTransCoderTab.java
index d72d973..956b3b5 100644
--- a/src/main/java/yagura/view/JTransCoderTab.java
+++ b/src/main/java/yagura/view/JTransCoderTab.java
@@ -289,7 +289,7 @@ private Date getConverterDateTime() {
             this.spnDatetime.commitEdit();
             date = (Date)this.spnDatetime.getValue();
         } catch (ParseException ex) {
-            logger.log(Level.INFO, null, ex);
+            logger.log(Level.INFO, ex.getMessage(), ex);
         }
         return date;
     }
@@ -304,7 +304,7 @@ private Date getGeneraterDateStart() {
             this.spnDateStart.commitEdit();
             date = (Date)this.spnDateStart.getValue();
         } catch (ParseException ex) {
-            logger.log(Level.INFO, null, ex);
+            logger.log(Level.INFO, ex.getMessage(), ex);
         }
         return date;
     }
@@ -319,7 +319,7 @@ private Date getGeneraterDateEnd() {
             this.spnDateEnd.commitEdit();
             date = (Date)this.spnDateEnd.getValue();
         } catch (ParseException ex) {
-            logger.log(Level.INFO, null, ex);
+            logger.log(Level.INFO, ex.getMessage(), ex);
         }
         return date;
     }
@@ -3320,7 +3320,7 @@ private void toSmartDecode(String inputText, TransUtil.EncodePattern encodePatte
             this.setOutput(decode, applyCharset);
         } catch (java.lang.NumberFormatException ex) {
             this.setOutputText(StringUtil.getStackTraceMessage(ex));
-            logger.log(Level.INFO, null, ex);
+            logger.log(Level.INFO, ex.getMessage(), ex);
         }
     }
 
diff --git a/src/main/java/yagura/view/MainFrame.java b/src/main/java/yagura/view/MainFrame.java
index e5fc8bd..8aea066 100644
--- a/src/main/java/yagura/view/MainFrame.java
+++ b/src/main/java/yagura/view/MainFrame.java
@@ -6,6 +6,7 @@
 import java.awt.event.WindowEvent;
 import java.io.File;
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 import java.util.Locale;
 import java.util.logging.Level;
 import java.util.logging.Logger;
@@ -131,10 +132,10 @@ public void windowClosing(WindowEvent e) {
             if (CONFIG_FILE.exists()) {
                 Config.loadFromJson(CONFIG_FILE, option);
             }
-            this.jTransCoder.setEncodingList(UniversalViewProperty.getDefaultEncodingList(Locale.JAPANESE), "UTF-8");
+            this.jTransCoder.setEncodingList(UniversalViewProperty.getDefaultEncodingList(Locale.JAPANESE), StandardCharsets.UTF_8.name());
             this.jTransCoder.setProperty(option.getJTransCoderProperty());
         } catch (IOException ex) {
-            logger.log(Level.WARNING, null, ex);
+            logger.log(Level.WARNING, ex.getMessage(), ex);
         }
 
         UIManager.LookAndFeelInfo[] lafInfo = UIManager.getInstalledLookAndFeels();
@@ -172,7 +173,7 @@ protected boolean isAvailableLookAndFeel(LookAndFeelUI lafUI) {
             LookAndFeel newLAF = (LookAndFeel) (lnfClass.getDeclaredConstructor().newInstance());
             return newLAF.isSupportedLookAndFeel();
         } catch (Exception ex) {
-            logger.log(Level.WARNING, null, ex);
+            logger.log(Level.WARNING, ex.getMessage(), ex);
             return false;
         }
     }