diff --git a/designer-base/src/main/java/com/fr/design/actions/file/PreferencePane.java b/designer-base/src/main/java/com/fr/design/actions/file/PreferencePane.java
index 0232b9f14..81b66451a 100644
--- a/designer-base/src/main/java/com/fr/design/actions/file/PreferencePane.java
+++ b/designer-base/src/main/java/com/fr/design/actions/file/PreferencePane.java
@@ -32,8 +32,6 @@ import com.fr.design.mainframe.vcs.common.VcsHelper;
 import com.fr.design.update.push.DesignerPushUpdateManager;
 import com.fr.design.utils.gui.GUICoreUtils;
 import com.fr.design.widget.FRWidgetFactory;
-import com.fr.env.RemoteEnvPane;
-import com.fr.env.TestConnectionResult;
 import com.fr.general.ComparatorUtils;
 import com.fr.general.FRFont;
 import com.fr.general.IOUtils;
@@ -50,11 +48,39 @@ import com.fr.workspace.WorkContext;
 import com.fr.workspace.server.vcs.VcsOperator;
 import com.fr.workspace.server.vcs.git.config.GcConfig;
 
-import javax.swing.*;
+import javax.swing.BorderFactory;
+import javax.swing.JFileChooser;
+import javax.swing.JOptionPane;
+import javax.swing.BoxLayout;
+import javax.swing.JPanel;
+import javax.swing.JProgressBar;
+import javax.swing.JDialog;
+
+import javax.swing.Timer;
+import javax.swing.SwingWorker;
+import javax.swing.UIManager;
+import javax.swing.KeyStroke;
+import javax.swing.SwingUtilities;
 import javax.swing.event.ChangeEvent;
 import javax.swing.event.ChangeListener;
-import java.awt.*;
-import java.awt.event.*;
+import java.awt.BorderLayout;
+import java.awt.Component;
+import java.awt.Dialog;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.FlowLayout;
+
+import java.awt.Window;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.WindowEvent;
+
+import java.awt.event.WindowAdapter;
 import java.io.File;
 import java.text.DecimalFormat;
 import java.util.Locale;