diff --git a/src/main/java/com/shuzijun/leetcode/plugin/listener/RegisterPluginInstallerStateListener.java b/src/main/java/com/shuzijun/leetcode/plugin/listener/RegisterPluginInstallerStateListener.java
index 9456b2ff..d401c4dd 100644
--- a/src/main/java/com/shuzijun/leetcode/plugin/listener/RegisterPluginInstallerStateListener.java
+++ b/src/main/java/com/shuzijun/leetcode/plugin/listener/RegisterPluginInstallerStateListener.java
@@ -1,8 +1,5 @@
 package com.shuzijun.leetcode.plugin.listener;
 
-import com.intellij.ide.plugins.IdeaPluginDescriptor;
-import com.intellij.ide.plugins.PluginInstaller;
-import com.intellij.ide.plugins.PluginStateListener;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.startup.StartupActivity;
 import org.jetbrains.annotations.NotNull;
@@ -13,7 +10,7 @@
 public class RegisterPluginInstallerStateListener implements StartupActivity {
     @Override
     public void runActivity(@NotNull Project project) {
-        PluginInstaller.addStateListener(new PluginStateListener() {
+       /* PluginInstaller.addStateListener(new PluginStateListener() {
             @Override
             public void install(@NotNull IdeaPluginDescriptor ideaPluginDescriptor) {
             }
@@ -22,6 +19,6 @@ public void install(@NotNull IdeaPluginDescriptor ideaPluginDescriptor) {
             public void uninstall(@NotNull IdeaPluginDescriptor ideaPluginDescriptor) {
                 System.out.println("uninstall");
             }
-        });
+        });*/
     }
 }
diff --git a/src/main/java/com/shuzijun/leetcode/plugin/setting/PersistentConfig.java b/src/main/java/com/shuzijun/leetcode/plugin/setting/PersistentConfig.java
index c0ea5837..c075cde8 100644
--- a/src/main/java/com/shuzijun/leetcode/plugin/setting/PersistentConfig.java
+++ b/src/main/java/com/shuzijun/leetcode/plugin/setting/PersistentConfig.java
@@ -1,6 +1,7 @@
 package com.shuzijun.leetcode.plugin.setting;
 
 import com.intellij.ide.passwordSafe.PasswordSafe;
+import com.intellij.ide.passwordSafe.PasswordSafeException;
 import com.intellij.openapi.components.*;
 import com.intellij.util.xmlb.XmlSerializerUtil;
 import com.shuzijun.leetcode.plugin.model.Config;
@@ -66,12 +67,23 @@ public String getTempFilePath() {
     }
 
     public void savePassword(String password) {
-        PasswordSafe.getInstance().storePassword(null, this.getClass(), "leetcode-editor", password != null ? password : "");
+        try {
+            PasswordSafe.getInstance().storePassword
+                    (null, this.getClass(), "leetcode-editor", password != null ? password : "");
+        } catch (PasswordSafeException exception) {
+            MessageUtils.showAllWarnMsg("warning", "Failed to save password");
+        }
     }
 
     public String getPassword() {
         if (getConfig().getVersion() != null) {
-            return PasswordSafe.getInstance().getPassword(null, this.getClass(), "leetcode-editor");
+            try {
+                return PasswordSafe.getInstance().getPassword(null, this.getClass(), "leetcode-editor");
+            } catch (PasswordSafeException exception) {
+                MessageUtils.showAllWarnMsg("warning", "Password acquisition failed");
+                return null;
+            }
+
         } else {
             return getInitConfig().getPassword();
         }
diff --git a/src/main/java/com/shuzijun/leetcode/plugin/setting/ProjectConfig.java b/src/main/java/com/shuzijun/leetcode/plugin/setting/ProjectConfig.java
index 57c044f2..8a0cf05a 100644
--- a/src/main/java/com/shuzijun/leetcode/plugin/setting/ProjectConfig.java
+++ b/src/main/java/com/shuzijun/leetcode/plugin/setting/ProjectConfig.java
@@ -62,4 +62,20 @@ public static class InnerState {
             projectConfig = new HashMap<>();
         }
     }
+
+    public String getComponentName() {
+        return this.getClass().getName();
+    }
+
+    public void initComponent() {
+    }
+
+    public void disposeComponent() {
+    }
+
+    public void projectOpened() {
+    }
+
+    public void projectClosed() {
+    }
 }
diff --git a/src/main/java/com/shuzijun/leetcode/plugin/setting/SettingUI.java b/src/main/java/com/shuzijun/leetcode/plugin/setting/SettingUI.java
index 485123c3..fb9902a8 100644
--- a/src/main/java/com/shuzijun/leetcode/plugin/setting/SettingUI.java
+++ b/src/main/java/com/shuzijun/leetcode/plugin/setting/SettingUI.java
@@ -202,7 +202,7 @@ public void mouseClicked(MouseEvent e) {
             LevelColourField.setText(config.getLevelColour());
             englishContentBox.setSelected(config.getEnglishContent());
         } else {
-            LevelColourField.setText(config.getLevelColour());
+            LevelColourField.setText(new Config().getLevelColour());
             ApplicationManager.getApplication().runWriteAction(() -> {
                 fileNameEditor.getDocument().setText(Constant.CUSTOM_FILE_NAME);
                 templateEditor.getDocument().setText(Constant.CUSTOM_TEMPLATE);
diff --git a/src/main/java/com/shuzijun/leetcode/plugin/timer/TimerBarWidget.java b/src/main/java/com/shuzijun/leetcode/plugin/timer/TimerBarWidget.java
index 6a81024c..056f9c3c 100644
--- a/src/main/java/com/shuzijun/leetcode/plugin/timer/TimerBarWidget.java
+++ b/src/main/java/com/shuzijun/leetcode/plugin/timer/TimerBarWidget.java
@@ -1,12 +1,15 @@
 package com.shuzijun.leetcode.plugin.timer;
 
 import com.intellij.openapi.project.Project;
+import com.intellij.openapi.util.SystemInfo;
 import com.intellij.openapi.wm.CustomStatusBarWidget;
 import com.intellij.openapi.wm.StatusBar;
+import com.intellij.openapi.wm.StatusBarWidget;
 import com.shuzijun.leetcode.plugin.model.Config;
 import com.shuzijun.leetcode.plugin.setting.PersistentConfig;
 import org.apache.commons.lang.StringUtils;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import javax.swing.*;
 import java.awt.*;
@@ -133,5 +136,15 @@ public void reset() {
         label.setVisible(false);
     }
 
+    @Nullable
+    public StatusBarWidget.WidgetPresentation getPresentation() {
+        return this.getPresentation(SystemInfo.isMac ? StatusBarWidget.PlatformType.MAC : StatusBarWidget.PlatformType.DEFAULT);
+    }
+
+    @Nullable
+    public StatusBarWidget.WidgetPresentation getPresentation(@NotNull StatusBarWidget.PlatformType type) {
+        return null;
+    }
+
 
 }
diff --git a/src/main/java/com/shuzijun/leetcode/plugin/utils/MessageUtils.java b/src/main/java/com/shuzijun/leetcode/plugin/utils/MessageUtils.java
index 9b78d1f7..9fc10dc4 100644
--- a/src/main/java/com/shuzijun/leetcode/plugin/utils/MessageUtils.java
+++ b/src/main/java/com/shuzijun/leetcode/plugin/utils/MessageUtils.java
@@ -61,4 +61,20 @@ public void showErrorMsg(String title, String body) {
     public static void showAllWarnMsg(String title, String body) {
         Notifications.Bus.notify(new Notification(Constant.NOTIFICATION_GROUP, title, body, NotificationType.WARNING));
     }
+
+    public String getComponentName() {
+        return this.getClass().getName();
+    }
+
+    public void initComponent() {
+    }
+
+    public void disposeComponent() {
+    }
+
+    public void projectOpened() {
+    }
+
+    public void projectClosed() {
+    }
 }