diff --git a/README.md b/README.md
index 9c48ded..ff99b8a 100644
--- a/README.md
+++ b/README.md
@@ -59,10 +59,14 @@ If you want to paste images in markdown, welcome to use my other plugin:[md-past
 
 I have fixed all the issues I met. If you find any issues, please report them to [issue](https://github.com/dzylikecode/VSCodeExt-docsify-Preview/issues)
 
-The scroll will be in the wrong position when you save the markdown file if the current markdown file can't be found in the sidebar. I find the reason is that Docsify won't execute the function `hook.ready` if the Markdown file is not in the sidebar. So you'd better add the markdown file to the sidebar first before writing the Markdown file with joy.
-
 ## Release Notes
 
+### 1.2.0
+
+fix: issue
+
+see more detail at https://github.com/dzylikecode/VSCodeExt-docsify-Preview/pull/11
+
 ### 1.1.0
 
 - fix:
diff --git a/package.json b/package.json
index 15dd054..bf06ff9 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "docsify-preview",
   "displayName": "docsify-Preview",
   "description": "write docs easily with docsify",
-  "version": "1.1.2",
+  "version": "1.2.0",
   "engines": {
     "vscode": "^1.71.0"
   },
diff --git a/src/server/httpServer.js b/src/server/httpServer.js
index ab18ba9..170335d 100644
--- a/src/server/httpServer.js
+++ b/src/server/httpServer.js
@@ -43,6 +43,12 @@ let httpServer = {
           if (fs.existsSync(filePath)) {
             response.sendFile(filePath);
           } else {
+            response.status(404).send({
+              error: {
+                status: 404,
+                message: "File not found: " + filePath,
+              },
+            });
             console.log("File not found: " + filePath);
           }
         });