diff --git a/src/main/java/io/github/linwancen/plugin/show/ext/conf/ConfCache.java b/src/main/java/io/github/linwancen/plugin/show/ext/conf/ConfCache.java
index 7edea19..72db54d 100644
--- a/src/main/java/io/github/linwancen/plugin/show/ext/conf/ConfCache.java
+++ b/src/main/java/io/github/linwancen/plugin/show/ext/conf/ConfCache.java
@@ -128,7 +128,9 @@ public class ConfCache {
             if (files.isEmpty()) {
                 return;
             }
-            ProjectView.getInstance(project).refresh();
+            if (!project.isDisposed()) {
+                ProjectView.getInstance(project).refresh();
+            }
             LOG.info("Ext doc conf load all complete {} files\n{}", files.size(), sb);
         });
     }
@@ -136,7 +138,7 @@ public class ConfCache {
     static void loadFile(@NotNull VirtualFile file, @Nullable Project project) {
         ApplicationManager.getApplication().invokeLater(() -> {
             ConfCache.load(file);
-            if (project != null) {
+            if (project != null && !project.isDisposed()) {
                 ProjectView.getInstance(project).refresh();
             }
         });
diff --git a/src/main/java/io/github/linwancen/plugin/show/ext/conf/ConfFileChangeListener.java b/src/main/java/io/github/linwancen/plugin/show/ext/conf/ConfFileChangeListener.java
index 694b672..966fe06 100644
--- a/src/main/java/io/github/linwancen/plugin/show/ext/conf/ConfFileChangeListener.java
+++ b/src/main/java/io/github/linwancen/plugin/show/ext/conf/ConfFileChangeListener.java
@@ -2,6 +2,7 @@ package io.github.linwancen.plugin.show.ext.conf;
 
 import com.intellij.openapi.fileEditor.FileEditorManagerEvent;
 import com.intellij.openapi.fileEditor.FileEditorManagerListener;
+import com.intellij.openapi.project.Project;
 import com.intellij.openapi.vfs.VirtualFile;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -17,13 +18,17 @@ public class ConfFileChangeListener implements FileEditorManagerListener {
 
     @Override
     public void selectionChanged(@NotNull FileEditorManagerEvent event) {
+        @NotNull Project project = event.getManager().getProject();
+        if (project.isDisposed()) {
+            return;
+        }
         @Nullable VirtualFile file = event.getOldFile();
         if (file == null) {
             return;
         }
         if (file.exists()) {
             try {
-                ConfCache.loadFile(file, event.getManager().getProject());
+                ConfCache.loadFile(file, project);
             } catch (Throwable e) {
                 LOG.info("ConfFileChangeListener catch Throwable but log to record.", e);
             }