diff --git a/backend/proxy/__init__.py b/backend/proxy/__init__.py
index 9c8b2c7..e3733c3 100755
--- a/backend/proxy/__init__.py
+++ b/backend/proxy/__init__.py
@@ -44,7 +44,7 @@ class Proxy:
                 self.config_file_path = config_file_path
     
     def start(self, in_pause=False):
-        if self.process is None:
+        if not self.isactive():
             self.filter_map = self.compile_filters()
             filters_codes = list(self.filter_map.keys()) if not in_pause else []
             proxy_binary_path = os.path.join(os.path.dirname(os.path.abspath(__file__)),"./proxy")
@@ -66,8 +66,9 @@ class Proxy:
             finally:
                 self.__delete_config()
     
+
     def stop(self):
-        if self.process:
+        if self.isactive():
             self.process.terminate()
             try:
                 self.process.wait(timeout=3)
@@ -101,6 +102,8 @@ class Proxy:
                 self.trigger_reload_config()
 
     def isactive(self):
+        if self.process and not self.process.poll() is None:
+            self.process = None
         return True if self.process else False
 
     def trigger_reload_config(self):
diff --git a/frontend/src/components/Header/index.tsx b/frontend/src/components/Header/index.tsx
index f1000e2..1d98b53 100755
--- a/frontend/src/components/Header/index.tsx
+++ b/frontend/src/components/Header/index.tsx
@@ -1,5 +1,5 @@
 import React, { useState } from 'react';
-import { ActionIcon, Badge, Button, Divider, Group, Image, Menu, Modal, Notification, Space, Switch, TextInput, Tooltip, FloatingTooltip, MediaQuery, PasswordInput } from '@mantine/core';
+import { ActionIcon, Badge, Button, Divider, Group, Image, Menu, Modal, Notification, Space, Switch, Tooltip, FloatingTooltip, MediaQuery, PasswordInput } from '@mantine/core';
 import style from "./Header.module.scss";
 import { changepassword, errorNotify, eventUpdateName, generalstats, logout, okNotify } from '../../js/utils';
 import { ChangePassword, GeneralStats } from '../../js/models';