diff --git a/src/main/idea/io/github/linwancen/plugin/show/java/JavaTree.java b/src/main/idea/io/github/linwancen/plugin/show/java/JavaTree.java
index 1c7d246..9645dfa 100644
--- a/src/main/idea/io/github/linwancen/plugin/show/java/JavaTree.java
+++ b/src/main/idea/io/github/linwancen/plugin/show/java/JavaTree.java
@@ -7,7 +7,14 @@ import com.intellij.ide.projectView.impl.nodes.PsiFieldNode;
 import com.intellij.ide.projectView.impl.nodes.PsiFileNode;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.vfs.VirtualFile;
-import com.intellij.psi.*;
+import com.intellij.psi.JavaDirectoryService;
+import com.intellij.psi.PsiDirectory;
+import com.intellij.psi.PsiField;
+import com.intellij.psi.PsiFile;
+import com.intellij.psi.PsiJavaCodeReferenceElement;
+import com.intellij.psi.PsiManager;
+import com.intellij.psi.PsiPackage;
+import com.intellij.psi.PsiType;
 import com.intellij.psi.impl.source.PsiClassReferenceType;
 import com.intellij.psi.javadoc.PsiDocComment;
 import io.github.linwancen.plugin.show.bean.SettingsInfo;
@@ -68,7 +75,7 @@ public class JavaTree {
 
         // On Packages View, Project Files View
         @Nullable VirtualFile virtualFile = node.getVirtualFile();
-        if (virtualFile == null || !virtualFile.isDirectory()) {
+        if (virtualFile == null || !virtualFile.isValid() || !virtualFile.isDirectory()) {
             return null;
         }
         @Nullable PsiDirectory psiDirectory = PsiManager.getInstance(project).findDirectory(virtualFile);
diff --git a/src/main/java/io/github/linwancen/plugin/show/bean/FileInfo.java b/src/main/java/io/github/linwancen/plugin/show/bean/FileInfo.java
index 1ef5424..0e1987c 100644
--- a/src/main/java/io/github/linwancen/plugin/show/bean/FileInfo.java
+++ b/src/main/java/io/github/linwancen/plugin/show/bean/FileInfo.java
@@ -53,6 +53,9 @@ public class FileInfo extends SettingsInfo {
             return null;
         }
         @NotNull VirtualFile file = viewProvider.getVirtualFile();
+        if (!file.isValid()) {
+            return null;
+        }
         @NotNull Project project = psiFile.getProject();
         return new FileInfo(file, document, project, FuncEnum.LINE);
     }
diff --git a/src/main/java/io/github/linwancen/plugin/show/cache/CacheUpdateEditorListener.java b/src/main/java/io/github/linwancen/plugin/show/cache/CacheUpdateEditorListener.java
index e59850a..d78d00e 100644
--- a/src/main/java/io/github/linwancen/plugin/show/cache/CacheUpdateEditorListener.java
+++ b/src/main/java/io/github/linwancen/plugin/show/cache/CacheUpdateEditorListener.java
@@ -20,7 +20,7 @@ public class CacheUpdateEditorListener implements FileEditorManagerListener {
     public void selectionChanged(@NotNull FileEditorManagerEvent event) {
         @NotNull Project project = event.getManager().getProject();
         @Nullable VirtualFile file = event.getNewFile();
-        if (file == null) {
+        if (file == null || !file.isValid()) {
             return;
         }
         ApplicationManager.getApplication().executeOnPooledThread(() -> {
diff --git a/src/main/java/io/github/linwancen/plugin/show/ext/TreeExt.java b/src/main/java/io/github/linwancen/plugin/show/ext/TreeExt.java
index 795de97..3ce015d 100644
--- a/src/main/java/io/github/linwancen/plugin/show/ext/TreeExt.java
+++ b/src/main/java/io/github/linwancen/plugin/show/ext/TreeExt.java
@@ -16,7 +16,7 @@ public class TreeExt {
 
     public static @Nullable String doc(@NotNull ProjectViewNode<?> node) {
         @Nullable VirtualFile file = node.getVirtualFile();
-        if (file == null) {
+        if (file == null || !file.isValid()) {
             return null;
         }
         return TreeExt.extDoc(file);
diff --git a/src/main/java/io/github/linwancen/plugin/show/ext/listener/FileOptListener.java b/src/main/java/io/github/linwancen/plugin/show/ext/listener/FileOptListener.java
index c0e6c2e..1ea2f8d 100644
--- a/src/main/java/io/github/linwancen/plugin/show/ext/listener/FileOptListener.java
+++ b/src/main/java/io/github/linwancen/plugin/show/ext/listener/FileOptListener.java
@@ -36,7 +36,7 @@ public class FileOptListener implements BulkFileListener {
     private static void forEvent(@NotNull VFileEvent event) {
         @NotNull List<FileLoader> list = FileLoader.EPN.getExtensionList();
         @Nullable VirtualFile file = event.getFile();
-        if (file == null) {
+        if (file == null || !file.isValid() || file.isDirectory()) {
             return;
         }
         if (event instanceof VFileMoveEvent) {
diff --git a/src/main/java/io/github/linwancen/plugin/show/ext/listener/FileSelectChangeListener.java b/src/main/java/io/github/linwancen/plugin/show/ext/listener/FileSelectChangeListener.java
index 3e7fd0c..49e6574 100644
--- a/src/main/java/io/github/linwancen/plugin/show/ext/listener/FileSelectChangeListener.java
+++ b/src/main/java/io/github/linwancen/plugin/show/ext/listener/FileSelectChangeListener.java
@@ -23,7 +23,7 @@ public class FileSelectChangeListener implements FileEditorManagerListener {
             return;
         }
         @Nullable VirtualFile file = event.getOldFile();
-        if (file == null) {
+        if (file == null || !file.isValid()) {
             return;
         }
         if (file.exists()) {
diff --git a/src/main/java/io/github/linwancen/plugin/show/lang/JsLangDoc.java b/src/main/java/io/github/linwancen/plugin/show/lang/JsLangDoc.java
index ef20359..be02c01 100644
--- a/src/main/java/io/github/linwancen/plugin/show/lang/JsLangDoc.java
+++ b/src/main/java/io/github/linwancen/plugin/show/lang/JsLangDoc.java
@@ -43,7 +43,7 @@ public class JsLangDoc extends BaseLangDoc {
     public @Nullable <T extends SettingsInfo> String treeDoc(@NotNull T info, @NotNull ProjectViewNode<?> node,
                                                              @NotNull Project project) {
         @Nullable VirtualFile virtualFile = node.getVirtualFile();
-        if (virtualFile == null) {
+        if (virtualFile == null || !virtualFile.isValid()) {
             return null;
         }
         @Nullable PsiFile psiFile = PsiManager.getInstance(project).findFile(virtualFile);
diff --git a/src/main/java/io/github/linwancen/plugin/show/lang/PhpLangDoc.java b/src/main/java/io/github/linwancen/plugin/show/lang/PhpLangDoc.java
index 4f9a646..659f5e2 100644
--- a/src/main/java/io/github/linwancen/plugin/show/lang/PhpLangDoc.java
+++ b/src/main/java/io/github/linwancen/plugin/show/lang/PhpLangDoc.java
@@ -43,7 +43,7 @@ public class PhpLangDoc extends BaseTagLangDoc<PhpDocComment> {
         Object value = node.getValue();
         if (value instanceof PsiElement) {
             @NotNull PsiElement psiElement = (PsiElement) value;
-            if (psiElement.getLanguage() == PhpLanguage.INSTANCE) {
+            if (psiElement.isValid() && psiElement.getLanguage() == PhpLanguage.INSTANCE) {
                 @NotNull PsiElement[] children = psiElement.getChildren();
                 for (PsiElement child : children) {
                     @Nullable PsiComment comment = PsiTreeUtil.getChildOfType(child, PsiComment.class);
diff --git a/src/main/java/io/github/linwancen/plugin/show/tree/first/FirstDoc.java b/src/main/java/io/github/linwancen/plugin/show/tree/first/FirstDoc.java
index 1360954..6d29b96 100644
--- a/src/main/java/io/github/linwancen/plugin/show/tree/first/FirstDoc.java
+++ b/src/main/java/io/github/linwancen/plugin/show/tree/first/FirstDoc.java
@@ -27,7 +27,7 @@ public class FirstDoc {
             return null;
         }
         @Nullable VirtualFile virtualFile = node.getVirtualFile();
-        if (virtualFile == null || virtualFile.isDirectory()) {
+        if (virtualFile == null || !virtualFile.isValid() || virtualFile.isDirectory()) {
             return null;
         }
         Project project = node.getProject();