diff --git a/src/main/java/com/lion/lionwebsite/Controller/PersonalController.java b/src/main/java/com/lion/lionwebsite/Controller/PersonalController.java
index df247bf..ff67b3f 100644
--- a/src/main/java/com/lion/lionwebsite/Controller/PersonalController.java
+++ b/src/main/java/com/lion/lionwebsite/Controller/PersonalController.java
@@ -2,10 +2,8 @@ package com.lion.lionwebsite.Controller;
 
 import com.lion.lionwebsite.Service.LocalServiceImpl;
 import com.lion.lionwebsite.Service.PersonalServiceImpl;
-import com.lion.lionwebsite.Util.FileDownload;
 import com.lion.lionwebsite.Util.Response;
 import com.fasterxml.jackson.core.JsonProcessingException;
-import jakarta.annotation.Resource;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import lombok.extern.slf4j.Slf4j;
@@ -32,11 +30,6 @@ public class PersonalController {
         this.localService = localService;
     }
 
-    @GetMapping("/sub/self")
-    public void sub(HttpServletResponse response, HttpServletRequest request){
-        FileDownload.export(request, response, "sub/sub.txt");
-    }
-
     @GetMapping("/files")
     public String file(String path) throws IOException {
         return personalService.getFiles(path);
diff --git a/src/main/java/com/lion/lionwebsite/Service/RemoteService.java b/src/main/java/com/lion/lionwebsite/Service/RemoteService.java
index 54aecd4..5748dbb 100644
--- a/src/main/java/com/lion/lionwebsite/Service/RemoteService.java
+++ b/src/main/java/com/lion/lionwebsite/Service/RemoteService.java
@@ -19,7 +19,6 @@ import org.springframework.stereotype.Service;
 
 import java.io.IOException;
 import java.net.*;
-import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
diff --git a/src/main/java/com/lion/lionwebsite/Service/WebSocketService.java b/src/main/java/com/lion/lionwebsite/Service/WebSocketService.java
index 9335f85..7d5ca06 100644
--- a/src/main/java/com/lion/lionwebsite/Service/WebSocketService.java
+++ b/src/main/java/com/lion/lionwebsite/Service/WebSocketService.java
@@ -48,7 +48,7 @@ public class WebSocketService implements WebSocketHandler {
     }
 
     @Override
-    public void afterConnectionEstablished(@NotNull WebSocketSession session) throws Exception {}
+    public void afterConnectionEstablished(@NotNull WebSocketSession session) {}
 
     @Override
     public void handleMessage(@NotNull WebSocketSession session, @NotNull WebSocketMessage<?> message) throws Exception {
@@ -59,10 +59,10 @@ public class WebSocketService implements WebSocketHandler {
     }
 
     @Override
-    public void handleTransportError(@NotNull WebSocketSession session, @NotNull Throwable exception) throws Exception {}
+    public void handleTransportError(@NotNull WebSocketSession session, @NotNull Throwable exception) {}
 
     @Override
-    public void afterConnectionClosed(@NotNull WebSocketSession session, @NotNull CloseStatus closeStatus) throws Exception {
+    public void afterConnectionClosed(@NotNull WebSocketSession session, @NotNull CloseStatus closeStatus) {
         sessions.remove(session);
     }